Customer : Excuse me!
Clerk: Yes, ma-am? What can I do for you?
Customer: I have a problem with this coffee maker, and I want my money back.
Clerk: ______.
Customer: The problem is that it doesn"t work! I"ve only used it three times.
A.Why
B.Well, are you sure
C.What"s the matter with it on earth
D.Well, what seems to be the problem
请帮忙给出正确答案和分析,谢谢!