单选题 ______ divorce is often the only satisfactory solution for married couples who can no longer stand the sight of each other, it can have a shocking effect on their kids.
A. Since B. While
C. As D. Unless

【正确答案】 B
【答案解析】[解析] while此处的意思是“尽管；虽然”，表示让步。根据句子的意义，选其池词是不对的。