Definition: 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 blowing a whislet in front of a room filled with people. they <sep> (A) smoke and blow the bubblebrushes together in a celebratory school pose. (B) are flying in the air in a formation. (C) are playing beer pong with several red solo cups, drinking in between plays. (D) are dancing in place as he blows the flue.
Output:
C