求教一语法题,在线=先谢谢了

In ancient times, Nubia was the principal corridor where there were cultural influences transmitted between Black Africa and the Mediterranean basin.

A where there were cultural influences transmitted

B through which cultural influences were transmitted

C where there was a transmission of cultural influences

D for the transmitting of cultural influences

E which was transmitting cultural influences

答案是B 为什么D不可以

明白了,谢谢