10. A recnet 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. darws a conclusion about the population in general based only 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 term.
D. draws a conclusion about a specific belief based on responses to queries about two different specific beliefs.
E. contains premises that cannot all be true.
我选了A但是答案是B, 谁是谁的充分和必要，有点不明白。
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