Those two girls are twins ______ ,they look very different

问题描述:

Those two girls are twins ______ ,they look very different
A although B but C however D because
答案给的是C,可句意上理解是C,谁能给出理由

C however
那两个女孩是双胞胎,然而,他们长得不一样.
but,however都表示转折,however后面可以有逗号.