- Cashier: “All right. Keep your receipt. If...

Câu hỏi: - Cashier: “All right. Keep your receipt. If something comes up, you can show it to us and you can get a refund.” - John: “_____”

A. OK, I won’t use it.                                

B. Thank you. I’ll keep it for you.

C. You’re welcome. See you.            

D. Thanks. I’ll put it in a safe place.