[求助]LSAT-3-IV 第5题

frankdong

LSAT-3-IV 第5题 Most parents who are generous are good parents, but some self-centered parents are also good parents. Yet all good parents share one characteristic: they are good listeners.
If all of the statements in the passage are true, which one of the following must also be true?
(A) All parents who are good listeners are good parents.
(B) Some parents who are good listeners are not good parent.
(C) Most parents who are good listeners are generous.
(D) Some parents who are good listeners are self-centered.
(E) Fewer self-centered parents than generous parents are good listeners
答案是d我也可以接受,但b好像也没有错啊? 谢谢

hierarch

注意 提问中的must即一定要是必要条件