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.

Example Input: F: Did the children enjoy the holiday camp or were they all homesick? ,M: Well, I must admit some of the younger kids were a little bit unhappy, because they've never been away on their own before and didn't know some of the other kids. But soon they recovered. By the last day, they didn't want to go home because they were having such a great time.
(A) F: It is too bad that kids didn't get used to the new environment and didn't have a good time in the end. (B) F: Well, it is common that children felt unfamiliar with the new environment at first. (C) F: It is a pity that they are unhappy to attend the trip the whole time. (D) F: I’m sorry, I don’t understand. Could you say it again?
Example Output: B

Example Input: F: Where is Rose, my dear? I wanted to ask her to go to the market to buy some things we need here at home. ,M: Her teacher telephoned just now. She said she asked Rose to stay at school for a performance.
(A) F: Alright. My poor daughter Rose. (B) F: I didn’t hear you. Please could you tell me again? (C) F: I'm really happy to hear our daughter Rose chooses to study at school after class. (D) F: Fine. By the way, my teacher Rose is indeed responsible.
Example Output: A

Example Input: F: Look at this photo, is that your family? ,M: Yes, there are 6 people. I've got a big family. ,F: Is this your brother?
(A) M: Yes. There are 6 in total. My family is really small. (B) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) M: Yes. There are 5 in total. (D) M: Yes. There are 4 in total.
Example Output:
B