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:
F: Can I sit here and wait for the doctor please? ,M: Sure but you may have to wait for a while. ,F: When will the doctor return? ,M: He said he'd be back around 4:30 PM, so an hour from now.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: You said he will back at 3:30 pm? (C) F: Okay, now is 3:30 pm and I will go to the mall first and be back one hour later. (D) F: He must be back as it's 4:30 pm now.

Ex Output:
C


Ex Input:
F: Where are you going to plant the tree, by the front door? ,M: No, that would be silly. I'll put it next to the garage. ,F: Wouldn't it be better in the backyard? ,M: Well, you're quite right. Let's go now.
(A) F: Are you going to plant the flower by the front door? (B) F: Cool. Let's plant the tree in the back yard. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Do you still want to plant it next to the garage? It wouldn't be better in the backyard.

Ex Output:
B


Ex 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.
(A) F: I didn’t hear you. Please could you tell me again? (B) F: Of course. Everybody will respect someone who is kind to other people. (C) F: Though your grandpa looks fierce, he earns respect by helping others. (D) F: He's respected for being the oldest man in town, so you never shout at him.

Ex Output:

B