如果贵方在下周结束之前仍未能结清账款 我们将不得不将此事交由我们的法律部门来处理。()

如果贵方在下周结束之前仍未能结清账款，我们将不得不将此事交由我们的法律部门来处理。()

A.I am afraid we will be forced to pass the matter over to your legal department if you are unable to settle your account by the end of next week.

B.I am afraid we will be forced to pass the matter over to our legal department if you are unable to settle your account by the end of this week.

C.I am afraid we will be forced to pass the matter over to our legal department if you are able to settle your account by the end of next week.

D.I am afraid we will be forced to pass the matter over to our legal department if you are unable to settle your account by the end of next week.

请帮忙给出正确答案和分析，谢谢！