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:
An introduction comes onto the screen for a video about rock climbing and a man introduces what will happen in the video. a men in a blue shirt <sep> (A) is doing a jump and falling off, then he begins to climb along the rock face with another by him. (B) stands behind a rock wall talking. (C) is shown climbing all the way to the top of a rock. (D) and the interviewer is inside of a gate in a park and he begins by jumping up to the top of a roofed wooden fence to do various things.

Ex Output:
C

Ex Input:
They collide into one another and back away. They again collide into each other and begin wrestling. the man in black sumo shorts <sep> (A) then returns to the ring holding the thin paddle and the man in black sumo shorts is left alone. (B) returns while the other man looks at the woman in black sumo shorts. (C) throws the other man out of the ring. (D) throws the man on the ground and onto the ground.

Ex Output:
C