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.

Ex Input:
M: At first, I thought this shirt was yellow, but now it looks green to me. ,F: You were right the first time. It's the blue light in the store that makes everything look different.
(A) M: Right, I like the light blue color of this shirt. (B) M: I guess so. This should be a beautiful authentic yellow shirt. (C) M: I’m sorry, I don’t understand. Could you say it again? (D) M: I know it's because of the red lighting. It's doesn't look yellow at all now.

Ex Output:
B


Ex Input:
F: What's in your hand, Bob? ,M: It's a German textbook. I'm learning German now. ,F: But aren't you also learning French? Don't tell me you're learning them at the same time. ,M: Well, that's exactly what I'm doing now.
(A) F: Learning one language is good. Is it a Chinese textbook in your hand? (B) F: Are learning two languages namely Chinese and French? You are not learning French, right? (C) F: I didn’t hear you. Please could you tell me again? (D) F: How can you learn three languages at the same time? But you don't choose to learn French.

Ex Output:
C


Ex Input:
M: Are you feeling well, Linda? You look very tired. ,F: No, my sister and I had a birthday party for our brother last night. I didn't get much sleep. ,M: Where did you have the party? ,F: At my uncles', and the party lasted very long. After the party, I had to type a history paper for the next morning. I was very nervous for my professor hates accepting any late papers.
(A) M: I didn’t hear you. Please could you tell me again? (B) M: It is a wise choice to type your paper after the party, or you will not able to hand it in to your professor on time this morning. (C) M: You uncle must be happy because you visited him after your mother's birthday party. Did you bring the birthday cake to him? (D) M: No wonder you are still energetic today with sufficient sleep. You studied history after the party and did great in today's test.

Ex Output:

B