A、She feels that the trip will take too long. B、The students haven’t chosen a professor. C、Professor Smith has to choose the des

M: I can’t remember the due date for our final exam.
W: I think it is the last day of class, but class master Smith said not to wait until the last moment to prepare it.
Q: What did Smith suggest to the student?

M: How many students will Professor Smith choose to go on the field trip?
W: Whether or not there will be a field trip has to be decided first.
Q: What does the woman mean?