Definition: 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.
Input: M: Hi, I think I'm sitting next to you, seat 35 BC. ,F: Oh, sorry. I'll just move my things. Hold on a minute. ,M: Thanks. I've been waiting at the gate for ages. ,F: The flight was delayed leaving Beijing, too. Security checks, you know. Are you going to London then?
(A) M: Yes. I wonder why our ship to London has been delayed. (B) M: Yes. We are both going to London by train. (C) M: Yes. I am so glad that our flight hasn't been delayed. (D) M: I’m sorry, I don’t understand. Could you say it again?

D