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". 

Example Input: A man is talking on a basketball court. he <sep> (A) picks up a bottle of water and takes a drink of the water. (B) shows how to play the volleyball. (C) then demonstrates how to throw a ball to the goal. (D) starts hit by the ball.
Example Output: A

Example Input: This is a tutorial on how to start a campfire. It shows the campfire burning on the ground. it <sep> (A) shows the chimney of the home. (B) shows how you can put a few around to have some light. (C) starts with the things you will need to begin with. (D) shows how to hold the fire and set the pot the just a bit to catch propane.
Example Output: C

Example Input: The group members enjoy themselves in the tubes are the go downhill. They share some pictures of their tubing adventure. the snowy mountain slopes <sep> (A) , landscapes and their onlookers. (B) climb into sight and a group comes together on the slope. (C) have several other tubers enjoying themselves as they go down the slopes. (D) and waterfall is shown.
Example Output:
C