M: May I help you? ,F: Yes, I would like to buy a swimming suit for my older sister as a birthday present.
(A) M: Since we are near the swimming pool, you can buy a swimming suit for your brother. (B) M: I am really sorry, I did not catch that. Would you slow down, please? (C) M: I am happy to join such a wonderful birthday party of your brother. (D) M: OK. I will recommend some good swimming suits in our shop.
D