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: My sister was supposed to call me when she got to Shanghai, but she didn't. ,M: Don't worry. Her plane was scheduled to arrive only a few hours ago, probably it has just been delayed.
(A) F: Can my sister find the airline information? (B) F: I am really worried about if my sister has arrived in Beijing safely. (C) F: I am really worried about if my sister has arrived in Shanghai safely. (D) F: I’m sorry, I don’t understand. Could you say it again?

C