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: 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 man is hunched over on the the ground trying to build a fire by himself. It's all about adding oxygen at the right time once you have started a nice fire. also <sep> (A) , the cameraman goes to stand up to help the guy who's in the crouch position as the camera guy films them and makes notes. (B) , the guy rushes to get a bigger one. (C) , the man is not lying flat on the ground as he is trying to put firewood into the fire on the ground. (D) , if the fire is dead or dying you just hit it with a little bit more oxygen and it will help bring it back up.
Example Output: D

Example Input: A man stands on a dock wearing a green shirt. He then rides a boat with a sail. He steers it through the lake. he <sep> (A) continues to follow instructions as the camera captures various points around him. (B) proceeds to do a lot of stunts on the boat. (C) stands on the dock again at the end. (D) speaks to the camera on the boat.
Example Output:
C