[求助讨论]关于og13语法的一些问题 菜鸟求教4！！！

65. Digging in sediments in northern China, evidence has been gathered by scientistssuggesting that complex life-forms emerged much earlier than they had previously thought.

(A) evidence has been gathered by scientists suggestingthat complex life-forms emerged much earlier than they had

(B) evidence gathered by scientists suggests a muchearlier emergence of complex life-forms than had been

(C) scientists have gathered evidence suggesting thatcomplex life-forms emerged much earlier than

(D) scientists have gathered evidence that suggests amuch earlier emergence of complex life-forms than that which was

(E) scientists have gathered evidence which suggests amuch earlier emergence of complex life-forms than that

evidence应该是一个抽象名词吧？