听力原文:W: Are you sure you can't stay any longer? The others are not leaving yet, you kn
M: No, I'm afraid I must go, but thank you very much indeed for a most enjoyable evening, and a wonderful dinner.
What is the probable relationship between the two speakers?
A.Waitress and customer.
B.Hostess and guest.
C.Wife and husband.
D.Mother and son.