大全sec19 －11

Unlike the United States, Japanese unions appear reluctant to organize lower-paid workers.

(A) Unlike the United States, Japanese unions appear reluctant to organize

(B) Unlike those in the United States, Japanese unions appear reluctant to organize

(C) In Japan, unlike the United States, unions appear reluctant to organize

(D) Japanese unions, unlike the United States, appear reluctant to organize（B）

(E) Japanese unions, unlike those in the United States, appear reluctant about organizing

凭感觉我选了正确答案B，但C为什么不对？