A、  B、  C、  C本句为请对方在早晚时段中选一个更喜欢的时段做运动的选择疑问句。

I have an appointment in an hour.
(A)You were appointed to the board.
(B)For a medical checkup.
(C)We’ll have lunch quickly, then.

Do you prefer to exercise inline morning or in the evening?
(A)In about 30 minutes.
(B)The gym is on the fifth floor.
(C)Whenever I’m free.