You will be given a definition of a task first, then some input of the task.
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.

F: Andrei, hello, it's Laura. I'm at Kuala Lumpur Airport. ,M: Welcome to Malaysia. I sent my driver to pick you up, is he there? ,F: No, he isn't.
(A) M: I'm sorry, I don't understand. Could you say it again? (B) M: My driver is approaching the airport. Please wait a few minutes. (C) M: My driver is approaching the train station to pick you up. (D) M: I asked one of my workmates to pick you up.
Output:
B