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: Sunshine Hotel. Good morning, Barbara speaking. ,M: Hello. I'd like to make a booking please. I'm on a business trip, so I need a single room. ,F: OK, your name please. ,M: John Griffin. That's JOHNGRIFFIN. ,F: OK, I've got that down. Wait a minute. We already have your name. You've been here before, haven't you? Or it must be someone with the same name. ,M: I've stayed with you twice before.
(A) F: No wonder we have your name. Thanks for choosing our hotel again. (B) F: Oh, you used to work at this hotel? Glad to serve you this time. (C) F: Your boss has booked a room for you, Sam, so we have your name. (D) F: I didn’t hear you. Please could you tell me again?
Example Output: A

Example Input: F: Hello Martin, long time no see. I heard you went to France to study, how was that? ,M: I was only there for a year, then I took a year off to travel around Europe. ,F: Where did you go? ,M: I went to Switzerland first and then Germany in Austria. I was planning to end my trip in Italy, but it didn't work out. ,F: Oh well, is it good to be back? ,M: Of course, but I'm returning to France to finish my degree. It's a four-year program.
(A) F: Really? You are returning to Italy to finish your degree and you need two years for your degree? (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: So, you mean it's a four-year program and now you need three years for this degree? (D) F: Really? You are not returning to France to finish you degree? Oh, you need four years for this degree!
Example Output: C

Example Input: F: Hello, Jim. Looking forward to seeing you. It's not a bad journey, really. ,M: But what do I do when there? How can I get to your place? ,F: Don't worry. When you get to Waterloo, take the underground to Regents Park. I'll meet you there at the gate, which will be obvious when you get there. You can't miss it. By the way, when are you leaving? ,M: I am ready now. I'll get the... the 1138, a southern train, I think it is. That's non-stop to Waterloo and do I get the underground there? ,F: That's it. You will go straight there on the underground. You want the Bakerloo line to Regents Park. It's only about 4 stops. Make sure you get a northern underground though. You want northern Bakerloo, OK? ,M: OK, I'll be there soon.
(A) F: Okay. As you cannot go straight there on the underground, I will meet you at the train station. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: Really? You mean you cannot be there soon? Well, I will meet you at the subway station. (D) F: Okay. You want southern Bakerloo and I will meet you at the park gate. Don't forget it.
Example Output:
B