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
Ans: D
我想請問E和D的差異在哪裡??到底什麼時候要用 to V. 什麼時候要用 for V.ing

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