请教

版主：对不起，我美找到前辈们讨论的对应题号，所以还是在发此帖问问

Japan received huge sums of capital from the United States after the Second World War, using it to help build a modern industrial system.

(A) Japan received huge sums of capital from the United States after the Second World War, using it to help build

(B) Japan received huge sums of capital from the United States after the Second World War and used it to help in building

(C)Japan used the huge sums of capital it received from the United States after the Second World War to help build

(D) Japan’s huge sums of capital received from the United States after the Second World War were used to help it in building

(E) Receiving huge sums of capital from the United States after the Second World War, Japan used it to help build

为什么不选E，而选C呢？C中capital后的it指代Japan吗？想不通。而且C太罗嗦了，E中句首的分词短语和后面的主语japan逻辑关系也是一致的，为什么不可以呢？请指教!

Choice A can be faulted because it, a singular pronoun, does not agree with sums of capital; also, using does not establish a logical time sequence in which Japan first received and then used the capital from the United States. In B, it is again wrong, and to help in building is less compact and idiomatic than to help build. Choice C is best. In D, to help it in building is flawed, and it has no free noun as its referent since Japan’s is a possessive modifier of sums. In E, it is again without a singular noun referent, and Receiving huge sums…Japan used … does not make clear the sequence of events. This question is of middle difficulty.