A、  B、  C、  A所给出的问题的关键词是reschedule。因此，选项(A)的回答，先肯定之后再询问什么时间合适，是符合语境的正确答案。选项(B)中的bus schedule是利用问题中出现的reschedule而设

I wonder how long it’ll take to drive to the conference center from the airport.
(A)It depends on traffic.
(B)Because it’s close to the hotel.
(C)The flight’s just under two hours.

Something urgent’s come up at work and I won’t be able to make it today; could we reschedule for later in the week?
(A)Sure, what day works best for you?
(B)I’m pretty sure the bus schedule is posted on the Website.
(C)I know, he was late every day this week.