18.Customer: Excuse me, I’d like to exchange the CD player. Clerk:What’s wrong with it?Customer: I bought it from your store yesterday. It doesn’t work.Clerk:No problem. ____________
(A) We have no-refund policy. There is nothing I can do.
(B) We offer refunds and exchanges within seven days of purchase.
(C) Here is your change.
(D) They are sold out.