[求助]rr的问og上一道逻辑题的答案？

chaos003

Advertisement: For sinus pain, three out of four hospitals give their patients Novex. So when you want the most effective painkiller for sinus pain, Novex is the one to choose.

Which of the following, if true, most seriously undermines the advertisement's argument?

(A)     

Some competing brands of painkillers are intended to reduce other kinds of pain in addition to sinus pain.

(B)      Many hospitals that do not usually use Novex will do so for those patients who cannot tolerate the drug the hospitals usually use.

(C)      Many drug manufacturers increase sales of their products to hospitals by selling these products to the hospitals at the lowest price the manufacturers can afford.

(D)      Unlike some competing brands of painkillers, Novex is available from pharmacies without a doctor's prescription.

(E)      In clinical trials Novex has been found to be more effective than competing brands of painkillers that have been on the market longer than Novex.

答案到底是C还是D啊，为什么og上选C，陈向东那本上选D？

wei_wangyan

LZ到逻辑专区问一下吧。

小猩猩

这个应该选C吧...

 D中的pharmacies与提干中的 hospitals说的不一致啊...

提干中说3/4的医院给病人开NOVEX...D中说不用处方就能在药房开出NOVEX....WEAKEN的方向不对

另;C说的就是医院医生拿回扣开药的事情吧??嘿嘿....