—Excuse me．Could you please tell me          ?

—Certainly．Take the escalator to the second floor and turn left, There is a bank next to the drugstore.

A．where can I exchange money

B．where the post office is

C．which is the way to the bank

D．how I can get to the restaurant

设积分区域D是由直线x=y，x=0和y=2所围成，则二重积分（）。

A．1

B．2

C．4

D．3