Instructions: 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". 
Input: A man is standing in front of a camel. Two children are riding it as it kneels to the ground. the kids <sep> (A) ride the camel past the people. (B) stand up and continue riding the camels. (C) sit the camel up while the man helps them down. (D) are then able to dismount from the camel.
Output:
D