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: How can you be shouting at your grandpa? You can't be so rude! ,M: No, I don't want to be rude to him, but I had to shout so that he could hear me. My grandpa has something wrong with his ears. He doesn't hear well. ,F: I'm sorry. I misunderstood you. Your grandpa looks kind. ,M: Yes, he is kind to everybody in our small town. So we all respect him. ,F: He looks quite old now. He must be in his seventies, right? ,M: Yes, he is 75 years old this year. ,F: Though he looks so old, he is still in good health. ,M: Yes, of course, he gets up early every morning and does some exercise in our garden. That's why he is still in good health.
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: Wow, it's amazing your grandfather does cooking every morning instead of doing any exercise. (C) F: Since your grandfather does exercise every morning, why is he in such a poor physical condition? (D) F: Sounds reasonable. I will tell my grandma to do some exercise every morning, like your grandpa.
Example Output: D

Example Input: ;,F: Amelia, what in particular do you have to do as a wedding planner? M;,F: I make most of the big decisions with the exception of more personal ones, such as what the bride will wear or who will be invited. I also booked the venue and the photographer. M;,F: So, do people ask you to organize their weddings to save money? M;,F: Well, I reduce some of the costs. But they have to pay my fee, so it works out about the same. In most cases, they are simply too busy to do it without assistance. M;,F: Tell me, what made you want to become a wedding planner? M;,F: In my case, it was after I'd been doing some voluntary work for a non-profit organization. Others come into wedding planning through different routes, such as restaurant management or providing meals for open air events. M;,F: So how could someone find work in this type of business? M;,F: Well, some companies offer courses, or you can provide written references from past clients. But in my case, people were impressed by shot of beautiful weddings planned and run by me.
(A) M: So, people were impressed by shot of beautiful weddings and you just attracted customers by presenting beautiful pictures? (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: Really? You mean I can provide written references from new clients but you attracted customers by presenting beautiful pictures? (D) M: So, people were not impressed by shot of beautiful weddings and you attracted customers by showing them written references?
Example Output: A

Example Input: F: Excuse me, do you know where the nearest subway station is? ,M: The nearest one is 10 minutes away on foot and it's the entrance to both line 5 and line 6, which one are you taking? ,F: I'm not so sure. I'm here on vacation.
(A) M: You are my best friend. (B) M: I'm here on vacation, too. Fancy meeting you here. (C) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) M: You know, I'm a well-known tour guide.
Example Output:
C