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 much is this piano, please? ,M: $1000. ,F: My god! That's a fortune! ,M: But you must realize that this is the most famous brand. ,F: But it's too dear for me. ,M: That's the best piano hit our store. ,F: I just want to get one for my daughter to learn how to play the piano.
(A) M: If you want to buy yourself a piano, this one is perfect. It is a niche brand and is the best piano in our store. (B) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) M: This is the best piano we have and it costs only $1500. It should be the best choice for your son. (D) M: This piano will suit your daughter very well since it is the most famous brand. She must like it.
Example Output: D

Example Input: F: Where are you going to take your vacation? ,M: Hawaii. ,F: That sounds like a great place to visit. Is your family going? ,M: Yes, we plan to go mountain climbing, fishing, swimming and windsurfing. But most of all we are planning to relax. My wife is taking a whole bunch of books to read.
(A) F: Although your wife just take one book, I know she is really fond of reading, right? (B) F: Oh, I think your wife must love reading very much, like her I always take books when traveling. (C) F: The trip to China must be very interesting, that's why your wife is counting down the days. (D) F: Excuse me, could you repeat the question?
Example Output: B

Example Input: M: Excuse me, I'm mailing this package to Japan. ,F: Alright. Fill out this form about the contents and value. Do you want to insure it? ,M: I don't think so. It's only some books. ,F: Are you sending it surface mail or airmail? ,M: Airmail, please.
(A) F: So, you want to send it by surface mail? Okay, fill out this form just about the contents. (B) F: So, you want to insure it and you want to send your package by airmail? (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: So, it's only some pens and you want to send your package by airmail?
Example Output:
D