You will be given a definition of a task first, then some input of the task.
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".

There is a large decorated christmas tree behind them. There is a woman sitting in the living room with a little girl. the boys <sep> (A) begin to climb hill on the christmas tree with an orange garland and used a brush. (B) play foos ball with the men. (C) are showing the little girl how to pierce her nose piercing. (D) start to play as the woman continues knitting the tree.
Output:
B