29. Eason: Excuse me. I bought this T-shirt for my girlfriend yesterday, but it’s too big for her.
Mary: So, do you want to exchange it for a smaller size or get a refund?
Eason: Well, do you have one in a medium size?
Mary: Lucky you. _______
(A) I guess you want to get a refund.
(B) The annual sale ended yesterday.
(C) I can’t find any size for your girlfriend.
(D) There’s only one more medium in stock.