A、The customer makes no more complaints. B、The customer can show her the receipt. C、The customer is still unhappy with it. D、The

W: Yes, can I help you?
M: Yes, you see, I bought this personal stereo at your shop three days ago, and I’m afraid that it hasn’t really matched up to what I was told about it.
W: I see, what exactly is the matter?
M: Well, first of all, there is this large scratch across the front of it.
W: But you should have noticed that when you bought it.
M: But it was in the box and all sealed up.
W: Well, I’m sorry, but it really is your responsibility to check the goods when you buy them. How are we to know that it wasn’t you who made the scratch?
M: That was ridiculous. But anyway, it’s not the most important thing. I really am not happy about this other thing.
W: And what is that?
M: Look, it says here that the noise from it should be undetectable by other people.
W: Yes, that’s right.
M: But people can hear it and it’s really embarrassing on the bus and the underground.
W: Well, I’m sorry, but it must be the way you are wearing the headphones.
M: Look! I know how to put earphones in my ears, thank you very much. But what I want to know is what you are going to do about it at all.
W: Well, I suppose we could exchange it for another model if you really aren’t happy with it.
M: No, I certainly am not.
W: Well, if I could just have your receipt.
M: Oh yes, well, there is a slight problem about the receipt.
1. Why didn’t the customer notice the scratch on the product?
2. About the scratch on the product what did the shop assistant think?
3. How did the customer feel when told he might not have worn the headphones properly?
4. How many complaints did the customer make about the product altogether?
5. In what condition could the shopkeeper exchange the product for the customer?