if only because 的用法？

frankzhiwei

1.Building large new hospitals in the bistate area would constitute a wasteful use of resources, on the basis of avoidance of duplicated facilities alone.

(A) on the basis of avoidance of duplicated facilities alone

(B) on the grounds of avoiding duplicated facilities alone

(C) solely in that duplicated facilities should be avoided

(D) while the duplication of facilities should be avoided（E）

(E) if only because the duplication of facilities should be avoided

1.这题看了大全的解释，可还是不太理解，请问AB具体怎么个错法？
2.还有E的后面用should be avoided是用了虚拟语气吗？ 如果是，if only because后面都是跟虚拟？
3.还有就是，这个句子的意思我其实不太理解，怎么前面责骂，后面有解释原因呢？？？

那位大侠指导一下~感谢！

frankzhiwei

继续顶~

spicytaco

找了半天，终于明白了
if only because =
At the very least, because duplication should be avoided.