【单选题】

Man: Did you make a reservation on the 9:00 flight for me
Woman: I thought you wanted to take the 8:30 one. It's too late to change now.
Question: What's the problem

A．The woman made no reservation.

B．The woman misunderstood the man.
C．The woman made the reservation for the 9.00 flight.
D．The woman changed the reservation.