Given the task definition and input, reply with output. In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.

M: Kathy, you look worried, why? ,F: According to the screen, our flight to Sydney has been delayed by 3 hours. So now we won't be boarding the plane until 2:00 PM. But we have a meeting at night. ,M: That shouldn't be a problem. The meeting with our customers isn't until 8:00 o'clock. Unfortunately, we won't have time to take a tour of the city as we planned. I have been looking forward to it for a long time. ,F: What a pity! However, we can look around next time.
(A) M: Really? You think it's not a pity? Oh, we will fail to attend a meeting. (B) M: Yeah, as the meeting with our customers isn't until 9:00 o'clock, we will fail to meet some customers. (C) M: Yeah, although we fail to go sightseeing in the city this time, we can look around next time. (D) M: I am really sorry, I did not catch that. Would you slow down, please?
C