Manufacturers of staplers make the majority of their profit

E. In extensive test marketing, stapler users found the new Office Supply Company stapler to be noticably superior to other staplers they had used.

Aren't we making assumption here that users who find new staplers of superior quality will eventually buy them on merit of their quality only? What if they are cost-conscience?
The reason i am not agreeing with OA is because if OA is correct then according to that reasoning, answer B. Annual sales of staplers are expected to double over the next three years. should hold good. Stapler sales will increase so will the sales of staple.

Noticeably, Knewton got noticably wrong.

Manufacturers of staplers make the majority of their profit on staples rather than on the staplers themselves. The Office Supply Company, which cannot sell its staples as cheaply as other manufacturers can, plans to alter the design of its stapler so that it will only accept a newly designed Office Supply Company staple, which will be sold at the same price as the Office Supply Company's current staple.

Which of the following, if true, most strongly supports the Office Supply Company's projection that its plan will lead to an increase in its sales of staples?

A. First-time buyers of staplers tend to buy the least expensive staplers available.
Perhaps the newly designed stapler is one the most expensive staplers. Also, the sales don't bank on the first time buyers alone.

B. Annual sales of staplers are expected to double over the next three years.
Annual sales of staplers in the entire stapler industry and not in Office Supply Company(OSC) alone will double. This doesn't mean those sales will include majority of the OSC's staplers.

C. An Office Supply Company cost analyst is studying ways to reduce the cost of manufacturing staples.
Yeah, and the other companies' cost analysts are sleeping. Studying doesn't mean implementing perfectly. Also, the case in point is to make the new design work for the sales, not cost cutting by using cheaper manufacturing methodologies. Way out of scope.

D. A competing manufacturer recently announced similar plans to introduce a stapler that would accept only the staple produced by that manufacturer.
Perhaps the sales of its current staples are due to some advantage of its own staples over those produced by its competitor. Thus, the plan of creating a newly designed stapler is not ill-conceived. This plan may work just good enough to safeguard its sales to a degree once its competitor switch the design, yet it won't guarantee an increase in its sales. The sales can go either way if such a thing happens. Inconclusive.

E. In extensive test marketing, stapler users found the new Office Supply Company stapler to be noticably superior to other staplers they had used.
This at least gives us a reason to consider that people may switch or buy its new staplers and obviously its staples. Let's say this is the best among the lot. It at least talks about the advantage of its new design. Correct.

I do not agree with OA but then again this question shows we need to pick "best" answer among the answer choices.

Manufacturers of staplers make the majority of their profit on staples rather than on the staplers themselves. The Office Supply Company, which cannot sell its staples as cheaply as other manufacturers can, plans to alter the design of its stapler so that it will only accept a newly designed Office Supply Company staple, which will be sold at the same price as the Office Supply Company's current staple.

Which of the following, if true, most strongly supports the Office Supply Company's projection that its plan will lead to an increase in its sales of staples?

A. First-time buyers of staplers tend to buy the least expensive staplers available.
B. Annual sales of staplers are expected to double over the next three years.
C. An Office Supply Company cost analyst is studying ways to reduce the cost of manufacturing staples.
D. A competing manufacturer recently announced similar plans to introduce a stapler that would accept only the staple produced by that manufacturer.
E. In extensive test marketing, stapler users found the new Office Supply Company stapler to be noticably superior to other staplers they had used.

I do not agree with OA but then again this question shows we need to pick "best" answer among the answer choices.

Responding to a pm:

There is no ambiguity in this question. The answer is definitely (E).

Manufacturers make the majority of their profit on staples not staplers.
The Office Supply Company, with expensive staples plans to alter the design of its stapler so that it will only accept its own new stapler with same cost as market.

Don't you see a flaw in their plan?

Why will anyone buy their stapler in the first place then? It is the same cost as others but takes only one kind of expensive staples. There has to be something only it will do for which there is a market. It doesn't matter how much the demand for staplers will increase. Why will anyone buy it. Wouldn't they prefer to buy the current ones which can take any cheap staples?

Choice (E) tells you why. The new staplers are superior to the current staplers. This could be a reason why people might buy it despite the more expensive staples. No other option gives you a reason to believe that the company's plan might succeed.

Then why not C is the answer for this question. If we reduce teh cost, the whole solution becomes more applealing and hence more sales?

Manufacturers of staplers make the majority of their profit on staples rather than on the staplers themselves. The Office Supply Company, which cannot sell its staples as cheaply as other manufacturers can, plans to alter the design of its stapler so that it will only accept a newly designed Office Supply Company staple, which will be sold at the same price as the Office Supply Company's current staple.

Which of the following, if true, most strongly supports the Office Supply Company's projection that its plan will lead to an increase in its sales of staples?

A. First-time buyers of staplers tend to buy the least expensive staplers available.
B. Annual sales of staplers are expected to double over the next three years.
C. An Office Supply Company cost analyst is studying ways to reduce the cost of manufacturing staples.
D. A competing manufacturer recently announced similar plans to introduce a stapler that would accept only the staple produced by that manufacturer.
E. In extensive test marketing, stapler users found the new Office Supply Company stapler to be noticably superior to other staplers they had used.

I do not agree with OA but then again this question shows we need to pick "best" answer among the answer choices.