听力原文：M: Could you give me a ride to the Museum of Modem Art on your way to the office?
W: I'm sorry but I'm not going to the office today. You might ask Mary. She's leaving about half past eight.
What does the woman mean?
A．She's already visited me museum.
B．Mary might be leaving earlier than she is.
C．Mary will take him to the office.
D．The man could probably go with Mary.