听力原文：W: Didn't David tell you that he wanted to get a ride with us to the national park this weekend？ Will that be all right？
M: Well, it is still not clear whether we'll have the room for one more person.
Q: What does the man mean？
(14)

A. He wants to make sure the weather is clear.
B. He doesn't know if they can get a room for David.
C. He isn't sure that there'll be a seat for David.
D. He wants David to talk with him.