1l8. The question of whether to divest themselves of stock in companies that do business in South Africa is particularly troublesome for the nation's 116 private Black colleges because their economic bases are often more fragile than most predominantly White colleges.

(A) than

(B) than those of

(C) than is so of

(D) compared to

(E) compared to those of

如果把E选项改成compared with those of是否正确呢？？

同意，单是改成with没有什么用的，要改整句的顺序了。