In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

Ex Input:
A man wearing grey shorts kneels down on a carpeted floor and begins stretching. The man moves his right leg under his hip and in front of his left knee. the man <sep> (A) continues exercising his left leg. (B) is then sitting while he's exercising and putting a harness. (C) then begins looking comfortable about doing this and stretches. (D) begins to rock back and forth in a slow movement as he stretches.

Ex Output:
D


Ex Input:
[header] How to diagnose and treat anal gland disease in cats [title] Notice the cat favoring their behind. [step] If there are problems with the anal glands, the cat will pay attention to it in a way that you will notice. They may lick it or bite at it. <sep> (A) This is a sign of a stressed cat. If you know that the cat is stressed and doesn't want to eat, keep an eye on the cat's back to see if it is depressed. (B) However, the cat may not lick at the glands. This behavior is a sign of poor health. (C) They may also scoot their behind across the floor. [substeps] Your cat does this to try and alleviate the pain and itchiness. (D) The cat also may cry out, disgust, or gain weight due to the condition. Take your cat to see your vet and get an answer right away.

Ex Output:
C


Ex Input:
[header] How to respond when asked on a date [title] Make your acceptance clear. [step] If you're interested, respond with a clear " yes, " instead of a vague response. If there is a schedule conflict with the date, but you'd still like to accept, make sure to give them a specific alternative time when you'll be available. <sep> (A) " i'm busy that day, " can be mistaken for a lack of interest, so make sure to let them know the next day you're free. [substeps] You can accept and then ask details about the date, like " i'd love to go. (B) [substeps] If you have to wait several hours, don't ask immediately. Try to come up with an excuse in which you would give them a certain amount of time to call if they say " no. (C) [substeps] For example, say you have an appointment at work that morning. Your excuse might be something like, " i can't wait until tomorrow, " or " i have another reason for arriving on time. (D) If they say " no, " be direct so you don't appear busy or distracted. [substeps] Don't over-address the day-to-day things your date asks.

Ex Output:

A