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: Consider Input: F: Tom, if you don't mind spending the day with 2 girls, you can come with us to the National Park. ,M: I'd love to. Thanks.
(A) F: Great, so we'll be three together. (B) F: That's two people going to the National Park instead of just me. (C) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) F: Great. This is the first time that four of us are going to the National Park together.

Output: A


Input: Consider Input: F: Look at this picture when I was in grade 3 in my senior high school. ,M: Wow, that's amazing. Looks like you've lost some weight since then. ,F: Actually, my weight is about the same. But I've grown a couple of inches. ,M: So you look thinner now.
(A) F: Better than I was in Grade 2 in senior high school. That's when I had the picture taken. (B) F: I've grown taller since I took the picture in Grade 3 in senior high school, but I've also put on some weight. (C) F: I didn’t hear you. Please could you tell me again? (D) F: I used to be short, so I didn't like photos. That one was taken in Grade 2 in my junior high school.

Output: C


Input: Consider Input: M: Hi Mary. Shall we go out for a walk? ,F: Well, I'd love to. But you see, I have to return this book to Xiao Ming. ,M: But you just borrowed it this day last week. Isn't it any good? ,F: Of course, it is. In fact, I finished it the day before yesterday.
(A) M: So, you mean you kept the book for a whole week but you finished it the day before yesterday? (B) M: Excuse me, could you repeat the question? (C) M: Oh,I see. You kept the book for five days and you don't have to return this book to Xiao Ming. (D) M: Really? You borrowed it this day last month but you just kept the book for 2 days?


Output: A