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: I haven't heard from my sister since last month. ,F: Don't worry Charlie letters from the United States can be slow sometimes.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: I wrote to my sister last month. (C) M: Are you expecting a letter from your sister? (D) M: Ok, I will expect the letter from her patiently then.

D