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 <sep> (A) scrubs the child's teeth. (B) brushes the boys teeth. (C) easily cleans the teeth of the child while kissing him. (D) moves cake cakes a to see if the child likes them.
Output:
B