Speaker A: I wonder whether it would be possible to change this double room to two single

Speaker A: I wonder whether it would be possible to change this double room to two single rooms. Speaker B: ______

A．Sorry, sir. All the single rooms are occupied. But if you like, I can check with Imperial Hotel to see if they have any.

B．I suggest you go to the receptionist to get more information about it.

C．But I prefer one double room to two single rooms.

D．Well, you should have decided what kind of room to stay at before you checked in.

请帮忙给出正确答案和分析，谢谢！