题目选项分析

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?

【选项】Many hospitals that do not usually use Novex will do so for those patients who cannot tolerate the drug the hospitals usually use