听力原文：W: Do you know how much a ticket to New York costs？M: It depends on which train y

听力原文：W: Do you know how much a ticket to New York costs？

M: It depends on which train you will take. It's a little over 30 dollars for the early one, but only 22 for the late one, which arrives at about midnight.

Q: Why is the ticket for the late train cheaper？

(18)

A．Because it is much slower than the early one.

B．Because it often arrives earlier.

C．Because it is seldom on schedule.

D．Because it arrives in the middle of the night.