W: I’d like to thank you for my enjoyable stay in this hotel.M: It’s been our pleasure to have you with us, Mrs. Smith.Q: What can we conclude from this conversation?____

A、Mrs. Smith had a pleasant stay with the man.
B、Mrs. Smith has stayed in this hotel for a long time.
C、Mrs. Smith has had a good time in this hotel.
D、The man is glad to see Mrs. Smith go.