语法一道, 请教

New genetic evidence—together with recent studies of elephants’ skeletons, tusks, and other anatomical features—provide compelling support for classifying
                    Africa’s forest elephants and its savanna elephants as separate species. 

A.     provide compelling support for classifying

B.     provide compelling support for the classification of

C.     provides compelling support to the classification of

D.     provides compelling support for classifying

E.      provides compelling support to classify

答案是D, 但E 哪里不对呢?是百思不得其解啊

尽管“provide support for”的用法相对固定，但是“support to”的用法也不是不存在的。

原句的主体结构是：Evidence provides support for classifying (or to classify) elephants as separate species.
                     

当用to classify时，给我的第一感觉是追问谁去classify，而原句并未指出。如果用for classifying，则强调了for本身所带出的功能性的含义，无须进一步说明究竟谁去做。

如果原句改成：“Evidence provides scientists with support to classify elephants as separate species.”似乎比用for更合适了。
                     

主语是evidence，无生命事物，to classify，表目的，那谁分类？应该不是证据，而是人去分类，所以会有歧义。

provide for 恰好避免了歧义。

解释得不清楚，有意见的请冒泡。