A和D有任何区别吗 为什么？？？

lllmmm

The spraying of pesticides can be carefully planned, but accidents, weather conditions that could not be foreseen, and pilot errors often cause much larger deposits of spray than they had anticipated.
A.    weather conditions that could not be foreseen, and pilot errors often cause much larger deposits of spray than they had
B.    weather conditions that cannot be foreseen, and pilot errors often cause much larger deposits of spray than
C.    unforeseeable weather conditions, and pilot errors are the cause of much larger deposits of spray than they had
D.    weather conditions that are not foreseeable, and pilot errors often cause much larger deposits of spray than
E.    unforeseeable weather conditions, and pilot errors often cause much larger deposits of spray than they had
这题选什么   A和D 有什么区别吗

RedDevils

bzbd

lllmmm

可是答案是B啊

海谷007

我选D
A,C E选项里的they指代不清，所以排除
B和D相比，前半句里主动比被动要清晰
所以，选D