[求助]GWD-3-30

GWD3-Q30:

Today’s technology allows manufacturers to make small cars more fuel-efficient now than at any time in their production history.

A.      small cars more fuel-efficient now than at any time in their

B.       small cars that are more fuel-efficient than they were at any time in their

C.      small cars that are more fuel-efficient than those at any other time in

D.      more fuel-efficient small cars than those at any other time in their

E.       more fuel-efficient small cars now than at any time in

想请问下,C选项里不是用了n+that+be+adj 这个结构不是不太好吗..为什么不选A呢.

当然A当中any time没有any other time来的好.A的比较结构有什么问题吗..