Approximately two hundred brands of personal computers are being manufactured, but we currently limit our inventory to only the eight most popular brands. We plan to increase greatly the number of computers we sell by expanding our inventory to include the ten best-selling brands.

Which of the following, if true, points out a major weakness of the plan above?


(A) The capabilities of three most popular personal computers add to be approximately equivalent, with no brand having consistent superiority in all respects.

(B) The seven most popular brands of personal computers account for almost all computers sold.

(C) As the users of personal computers become more sophisticated, they are more willing to buy less well-known brands of computers.

(D) Less popular brands of computers often provide less profit to the retailer because prices must be discounted to attract customers.

(E) The leading brand of personal computer has been losing sales to less popular brands that offer similar capabilities for less money.
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Only 7 brands give us income. If we start to sell 3 more brands of computers (totalling 10), we will not increase our sells, because people will go on not to buy other computers which are not those 7. So, people buy only 7 brands, other brands are not interesting for them.
So B weakens the argument

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Understand :
- we limit our inventory ( available stock with the company at present) to 8 most popular brands
- We will expand our inventory to include "ten best selling brands"
- why?? INCREASE GREATLY the number of computers we sell

- Flaw

Think:
Typical GMAT pattern - OVERLAP of groups.... I want to increase the sale of computers from my store. I already have 8 most popular computers , and now i am going to expand my inventory to 10 best selling brands. why?? I want to increase my sale SUBSTANTIALLY. But what if i get to know that the most popular are themselves best selling?? that is most of my current most popular brands are actually the best selling then including the same brands once again MAY NOT increase my sale GREATLY
.Have I made sure that both are actually different?? that is there is a minimal overlap of both groups??

- In this answer choice we are only considering the most popular brands and comapring capabilities among them. HOW does this choice help us ecaluate the efficacy of my plan to increase sale by include BST selling brands??
.
- If 7 of most popular brands are also the most selling (best selling) then including 2 top selling brands may not increase my sale GREATLY. Sure it may increase but not greatly

-This does not talk about a weakness in my plan. also there is a reason why "best selling brands" is used. It means consumers actuallu but those specific brands in great numbers.

- "profit" is not our concern. we are concerned with SALE

-"The " that means one particular brand is loosing its market to someone else. But are we including that brand in our inventory?? WE DONT KNOW

The plan here is to increase the number of computers in the inventory greatly by including 2 more brands. Choice B would be the most weakening sentence because if top 7 brands account for almost all the computers sold then it would make minimal change in the number of computers in the inventory if he includes two more brands. Hence, B is the answer.