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: Another cup of coffee? That's your fourth since lunch. You must be really thirsty. ,M: Well, I stayed up very late last night preparing for my paper. I just wanted to keep myself awake.
(A) F: So you are sleepy because you played games last night. (B) F: So you drink so much coffee because you are sleepy. (C) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) F: You are  addicted to tea.

Output: B


Input: Consider Input: M: How can I help you, Ma'am? ,F: I was hoping you could look at my car today. For the past few weeks, it has been making very strange noises. ,M: What kinds of noises? ,F: It sounds as if something is being damaged in the wheels. It only happens when I'm slowing down. ,M: Whoa. It sounds like you need new brakes. You'll have to leave the car with us until tomorrow. ,F: Gosh, I was thinking you'd be able to get it back to me this afternoon.
(A) M: I can try but I am not sure because your engine doesn't work. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: I will try my best. But first I need to check your brakes to see what happened. (D) M: Don't worry, your car works well except the wheels, I will replaced them at once.

Output: C


Input: Consider Input: M: Excuse me, I'm looking for the Johnsons. ,F: Oh, it's not on this floor. It's on the third floor. Go downstairs and turn left.
(A) M: Really? It is on this floor? So, now we are on the second and the Johnsons are also on the second floor. (B) M: I am really sorry, I did not catch that. Would you slow down, please? (C) M: Really? You mean it's not on this floor and it's on the second floor. We are on the fourth floor and I should go downstairs and turn left. (D) M: Really? You mean we are on the fourth floor and I should go downstairs and turn left?


Output: D