John is talking to a cashier at the checkout count...

Câu hỏi: John is talking to a cashier at the checkout counter of the supermarket.Cashier: “All right. Keep your receipt. If something comes up, you can show it to us and you can get a refund.”John: “________”

A Thanks. I’ll put it in a safe place

B Thank you. I’ll keep it for you.

C OK, I won’t use it,

D  You’re welcome. See you.