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 lady holds a toothbrush as a child sits on a counter. The lady brushes the boys teeth. she <sep> (A) wets the toothbrush and puts toothpaste on it. (B) puts toothpaste on the brush and brushes the dogs teeth. (C) finishes and the little boy smiles. (D) washes his teeth with a bath machine.
Output:
C