One CR question to discussion

A system-wide county school anti-smoking education program was institured last year. The program was clearly a success. Last year, the incidence of students smoking on school premises decreased by over 70 percent.

Which of the following, if true, would most seriously weaken the argument in the passage?

A. The author of this statement is a school system official hoping to generate good publicity for the anti-smoking program.

B. Most students who smoke stopped smoking on school premises last year but continued to smoke when away from school.

C. Last year, another policy change made it much easier for students to leave and return to school grounds during the school day.

D. The school system spent more on anti-smoking education proprams last year than it did in all previous years.

E. The amount of time stuents spent in anti-smoking education programs last year resulted in a reduction of in-class hours devoted to academic subjects.

The answer is C. I think B seems also correct.

偶也觉得答案C怪怪的~~~“斑竹们，牛牛们，快站出来指点迷津啊”~~~~~~~~~~~深情的呼唤你们ing（呕吐声一片……）