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: M: Is there a city where it's always warm? ,F: Yes, there are many cities where it's almost always warm. San Diego for example. ,M: Are there any other cities where it's always hot? ,F: Yes, there are quite a few. Most of the cities in the southern part of the United States are hot all year.
(A) M: I see. Most cities in the western part of China are always hot. (B) M: I know that cities in the southern part of China is always hot. (C) M: Excuse me, could you repeat the question? (D) M: It seems that most cities in the southern part are hot all year around.

Output: D


Input: Consider Input: M: Have you decided whether to rent a room off campus next semester or still stay in the dormitory? ,F: We're still talking about that. Lissy's mom wants her to stay at home. ,M: You always hesitate in making decisions.
(A) F: Yes, although I am living in the dormitory this semester, I still can't decide where to live next semester. (B) F: Excuse me, could you repeat the question? (C) F: Why do you say that? Since I am living in the dormitory this semester, I have decided to live in the dormitory next semester. (D) F: Although I live at home this semester, I may not be able to next semester because Lissy's mother doesn't want her to live at home.

Output: A


Input: Consider Input: M: Why don't you have some of my cake Sue? I made it just for this party. ,F: Sorry Bill, I'm not into cakes at the moment. I thought you knew about my diet. ,M: On your birthday? Surely you can eat whatever you want on your birthday, you can start your diet tomorrow. And anyway, you look great. ,F: Well, thanks Bill, I am not on a diet to lose weight, actually. My doctor told me to stop eating certain foods. I'm trying to avoid being allergic to something.
(A) M: I am really sorry, I did not catch that. Would you slow down, please? (B) M: So you don't have the cake because you are trying to avoid being sick, do you? (C) M: Although you are on a diet so you don't eat cake, today is your birthday. (D) M: Atyhough you don't have the cake because you are trying to avoid being sick, oday is your birthday.


Output: B