M: If I were you, I'd ride a bike to work. Taking a bus during rush hour is really terrible. ,F: Thanks for your advice, but I've lost my bike recently.
(A) M: Oh, so you have to take bus. Now I see. (B) M: Well, so you are walking to work recently. (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: Is this your bike? So cool!
A