Choose the best way to approach the guest in the following situation. You are asking a guest to wait 15 minutes until his room is ready. You say:
A.
Sir, it will be 15 minutes until your room is ready. Would you like to take a seat, and I will order you a tea or coffee.
B.
You have to wait for 15 minutes.
C.
I'm sorry, Sir. It will be 15 minutes until your room is ready.