大全上的一道题

           Even though the state has spent ten years and seven million dollars planning a reservoir along the Ubi
                River, the project will have to be abandoned as a result of the river becoming so heavily polluted.

(A) will have to be abandoned as a result of the river becoming so heavily polluted

(B) is to be abandoned on account of the heavy pollution which the river received

(C) had to be abandoned because the river had received such heavy pollution

(D) has to be abandoned because of the river and its heavy pollution（E）

(E) must be abandoned because the river has become so heavily polluted

A错在哪里呢，as a  result和result  from有什么特殊的用法吗

E吧

我觉得E的意思更加通顺，abandon是因为污染，而不是因为river

A 好像和原题中的一样，怎么回事？

 原题：will have to be abandoned as a result of the river becoming so heavily polluted.

A: will have to be abandoned as a result of the river becoming so heavily polluted