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: Are you staying by yourself again this summer vacation? ,M: No, I'm not. My brother and sister are staying with me right now. ,F: Really? What are they doing this summer? ,M: Well, my brother is on vacation now. He always wants to come and visit the city.
(A) F: So he is here in the city to study, isn't he? (B) F: So he is here in the city to study, isn't he? (C) F: Why is your brother here in winter? (D) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please?

D