单项选择题

M:I’ve lost my credit card issued by your bank.What should I do,please?
W:I am sorry for that.But you have to go to that counter over there for the card business.
Q:Why does the customer come to the bank?()

A.He got a credit card of his friend and come to ask how to use it.
B.He got a card and did not know whose card it is.
C.He has lost his credit card and come to ask what to do.
D.He has found a credit card and come to ask what to do.