Detailed 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".
Q: She first takes some baking soda on the rag and scrubs it on the sink. Then she takes the toothbrush and dips it in the baking soda. she <sep> (A) uses the brush to scrape it on the cloth then puts the paper towel on the rag. (B) brushes the toothbrush on the sink edges to clean it. (C) takes a bite of the soda and tastes it. (D) then rubs it onto her face and starts to pack her baking soda in cups.
A:
B