选项
A.
溴代烷＞氯代烷＞碘代烷
B.
氯代烷＞溴代烷＞碘代烷
C.
溴代烷＞碘代烷＞氯代烷
D.
碘代烷＞溴代烷＞氯代烷
正确答案：