Help~GWD13--Q13求解释

kevinxdx

Building large new hospitals in the bistate area would constitute a wasteful use of resourses,on the basis of avoidance of duplicated facilities alone
A on the basis of avoidance of duplicated facilities alone
B on the grounds of avoidance duplicated facilities alone
C solely in that duplicated facilities should be avoided
D while the duplication of facilities should be avoided
E if only because the duplication of facilities should be avoided
答案选E，我选了D。if only 这里什么用法啊？求指教