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". 

[Q]: A person is riding a bike over a trail. they <sep> (A) go over several jumps on the trail. (B) set up a camera in the middle of the trail. (C) are going down the road on a dirt trail. (D) go through a tunnel on the side.
[A]: A


[Q]: Two young children come down the slope in red and black tubes. They come down steadily and smoothly till they reach the bottom of the slope. there <sep> (A) are some other people climbing up the slope with tubes and sledges in their hands. (B) are some people standing near a water drop holding tubes. (C) they sit on the rails and wait for the lift to come before they get off the roller coaster. (D) is an interview with a reporter from the tv station and a news station talking about mountainous terrain and the people who are climbing to the bottom of the hill.
[A]: A


[Q]: A girl is stretching in front of a swimming pool. she <sep> (A) releases a ball and bounces it around. (B) steps on a board and dives into the pool. (C) jumps in the water and swims towards the camera. (D) holds a stick up in front of her and then throws a disc.
[A]:
B