Dialogue:

M: Can I help you?

W: Yes, well, I bought this tie last week for my husband's birthday, and er...well he doesn't like it. Could I change it for something else, such as a shirt or a hat?

M: Certainly, madam, provided that it hasn't been worn, and if you have the receipt.

W: Yes, here it is.

M: OK, er... this tie looks as if it were worn. I'm afraid I can't put that back on the shelf.

W: Oh, that's a pity.

Question: Why did the assistant refuse to help the woman? 

- Because the woman didn't show him the receipt.

- Because the thing she wanted to change had been worn.

- Because the woman told a lie.


Because the thing she wanted to change had been worn.