He said to the hotel receptionist, “Can you tell me the tariff of rooms?

A. He asked the hotel receptionist that if he can tell him the tariff of rooms.
B. He asked the hotel receptionist to tell him the tariff of rooms.
C. He enquired the hotel receptionist if he can tell him the tariff of rooms.
D. He asked the hotel receptionist if he could tell him the tariff of rooms.