請教一題考古題

請教：

When doctors attempt to diagnose an illness, they look for ways in which the patient's symptoms resemble those of one disease and are different than those of another.

(A) and differ from those of others.

(B) but are different from those of the others.

答案為(A)

請問一下(B)選項有何錯誤之處呢? 連接詞but有錯嗎?

这是个优选结构的问题吧：

实义n>v>adj>抽象n>分词>从句

ps,what's the meaning of 考古题？

sabrina07，

謝謝你回答我的問題唷!

我說的考古題就是以前考過的真題!可能我們用語不太一樣吧..

同意楼上的观点。

另外跟一些像并不妨碍跟另一些不像啊，所以两句之间不存在转折关系。