885-18-9

Many writers of modern English have acquired careless habits that damage the clarity of their prose, but these habits can be broken if they are willing to take the necessary trouble.

(A) but these habits can be broken

(B) but these habits are breakable

(C) but they can break these habits

(D) which can be broken（C）

(E) except that can be broken

请问A为什么不对