M: Do you like a one-room or two-room house? ,F: Two rooms. I think there is enough space to put my piano.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: Then let's keep talking about houses. (C) M: I can't believe that you like one-room house, but let's keep talking about piano. (D) M: Although you like one-room house, let's keep talking about space.
B