M: Now, what's your problem, Madam? W: Oh, yes. My husband bought this yellow skirt here yesterday. It is very nice, but it's not the colour I want. Have you got any blue ones?
What does the woman want to do? (A) She wants to change the yellow skirt for a blue one. (B) She wants to buy another skirt. (C) She wants to change the blue skirt for a yellow one.