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: F: Nice to meet you, Peter. ,M: Welcome to my home. Come in, please. ,F: Who is the man I met at the gate a moment ago? ,M: Do you mean the man wearing a pair of sunglasses? He is my neighbor. We have been neighbors for 20 years. ,F: Really? I haven't met him before, though I have been here several times. ,M: He is a pilot named Jack. He has been to many countries in the world. ,F: How lucky he is. ,M: But his wife isn't so lucky. She always stays at home alone. ,F: I see. Haven't they got a child? ,M: No, they considered Charlie as their son. It's really a kind pet dog.
(A) F: Oh, Jack's son called Charlie. He is a kind little boy. (B) F: So Charlie is one of Jack's wife's friends, isn't he? (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: Oh, Charlie is Jack's dog. I thought he is their kid.

D