M: How do you go to work in London? By bus, or by the underground railway? ,F: Buses are always crowded and are often stuck in traffic jams. The private cars can't help at all. So I prefer to use the subway.
(A) M: So, you like bus better. (B) M: You're right, subway is the best choise. (C) M: I am really sorry, I did not catch that. Would you slow down, please? (D) M: You're right. The most convenient transportation is car.
B