—Do you mind if I smoke here?

—______ You can go to smoke in the next door. [ ]

A. Yes, please.

B. Never mind.

C. You'd better not.

D. Of course not.

假设某国某年年末外债余额1600亿美元，当年还本付息总额为200亿美元，当年国民生产总值1万亿美元，当年商品劳务出口总额为2100亿美元。
请根据以上资料回答下列问题：

该国偿债率为( )。

A．9.5%

B．32%

C．16%

D．76.2%