求助大全230T！有点难理解不能啊！

JosephWen

230.        Critics of the trend toward privately operated prisons consider corrections facilities to be an integral part of the criminal justice system and question if profits should be made from incarceration.
(A) to be an integral part of the criminal justice system and question if
(B) as an integral part of the criminal justice system and they question if
(C) as being an integral part of the criminal justice system and question whether
(D) an integral part of the criminal justice system and question whether
(E) are an integral part of the criminal justice system, and they question whether
key: D

选了B，为什么consider...as + N. 不可以？另外记得question if这种用法和question whether两种从句都是可以的？只是whether最后可以加or not?
谢谢！

skyemotion

if有歧义，可以表示如果。
通常是用whether