A: Excuse me; I’m looking for the Main Library.
B: _____________.
a. It’s on the second floor of Bldg. 31.
b. It’s on the firet floor of the gym.
c. It’s on the mezzanine floor of the office of the president
d. It’s on U-thong Nok Road
e. It’s at the entrance of Rajavithi gate