LSAT-25-2-25

25.   A recent survey showed that 50 percent of people polled believe that elected officials should resign if indicted for a crime, whereas 35 percent believe that elected officials should resign only if they are convicted of a crime. Therefore, more people believe that elected officials should resign if indicted than believe that they should resign if convicted.

The reasoning above is flawed because it

(A) draws a conclusion about the population in general based only on a sample of that population

(B) confuses a sufficient condition with a required condition

(C) is based on an ambiguity of one of its terms

(D) draws a conclusion about a specific belief based on responses to queries about two different specific beliefs（B）

(E) contains premises that cannot all be true

请指教, 为什么这道题选B.

25.   A recent survey showed that 50 percent of people polled believe that elected officials should resign if indicted for a crime, whereas 35 percent believe that elected officials should resign only if they are convicted of a crime. Therefore, more people believe that elected officials should resign if indicted than believe that they should resign if convicted.