【答案解析】[听力原文]6-7 W: Can I help you? M: Yes. I bought this radio two days ago, but I'm afraid it doesn't work. I'd like to change it for another one. W: Oh, dear. Yes, of course. Have you got your receipt? M: Yes, here it is. W: Thank you. Just a moment, please.
单选题
What is the most probable result of the conversation?