一道语法没搞懂

以下是引用心静在2003-6-29 21:26:00的发言：
Building large new hospitals in the bistate area would constitute a wasteful use of resources, on the basis of avodiance 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)if only because the duplication of facilities should be avoided
选E，这题到底什么意思？好象A，B，C并没有语法错误。