Because visual inspection cannot reliably distinguish

Question

Because visual inspection cannot reliably distinguish certain skin discolorations from skin cancers, dermatologists at clinics have needed to perform tests of skin tissue taken from patients. At Westville Hospital, dermatological diagnostic costs were reduced by the purchase of a new imaging machine that diagnoses skin cancer in such cases as reliably as the tissue tests do. Consequently, even though the machine is expensive, a dermatological clinic in Westville is considering buying one to reduce diagnostic costs.

Which of the following would it be most useful for the clinic to establish in order to make its decision?

A. Whether the visits of patients who require diagnosis of skin discolorations tend to be shorter in duration at the clinic than at the hospital
B. Whether the principles on which the machine operates have been known to science for a long time
C. Whether the machine at the clinic would get significantly less heavy use than the machine at the hospital does
D. Whether in certain cases of skin discoloration, visual inspection is sufficient to make a diagnosis of skin cancer
E. Whether hospitals in other parts of the country have purchased such imaging machines

gmacvik · Answer

looks D to me....
if visual inspection is NOT sufficient to make a diagnosis of skin cancer, then additional test will be needed, which will increase the cost not reduce

Swagatalakshmi · Answer

I see  C !

tennis1ball · Answer

C for me too. 

The hospital can reduce cost because of heavy use. For a small clinic, however, it may not be fully used to justify its high price.

ak_idc · Answer

C for me too. If the clinic uses the machine less frequently than the hospital does :wink:

, then buying may not be a good business proposition for the clinic.

uvs_mba · Answer

I fell for the trap D :cry:

I can always narrow the answer down to 2 choices, but I have often selected the wrong answer. Does it happen to you guys too? Whats the best way to deal with this?

asaf · Answer

I did not like the question.

A, B, D and E are completely irrevelant. 
Left with C.

AK47 · Answer

choice c.

what's the oa?

nischalb · Answer

C

ak_idc · Answer

hey Uvs, that happens to everybody. Dont worry abt that :wink:

. Options in GMAT are given in 3:2 ratio. I read some where. In this type of questions we need to be careful abt scope.

arjsingh1976 · Answer

U guys are gr8...I also fell in D trap:) 

Now clear about C !

VerbalBot · Answer

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Because visual inspection cannot reliably distinguish

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