Q: 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".
A small boy brushes his teeth at a bathroom sink. The boy stops brushing his teeth and starts manipulating the buttons on the electric toothbrush. the boy <sep> (A) rinses the toothbrush and his mouth with running tap water. (B) returns to brushing the buttons and stops to glower at the camera. (C) then picks up the razor and blows toothpaste down his chin. (D) then stops brushing and turns the savetop back off.
A:
A