[求助] 大全832(補充92)

832. The supply of oil being finite has become an economical and political consideration of the first magnitude for all modern industrial nations.

(A) The supply of oil being finite has become an economical

(B) The finite supply of oil has become an economical

(C) That the supply of oil is finite has become an economical

(D) The supply of oil being finite has become an economic（E）

(E) That the supply of oil is finite has become an economic

答案是(E)沒有問題.

我想問的是,關於(D),唸起來就覺得怪怪的,所以做這題的時候也沒選它,可是又說不出個具體的理由(D)哪裡怪,可以請NN指點我一下嗎?

謝謝嚕...^_^