Given the task definition and input, reply with output. 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 man trains his dog how to catch frisbees and perform tricks and stunts on a large grass covered field by himself. a man <sep> (A) talks while frisking a yellow and black dog while doing tricks and parking a shiny blue car. (B) throws frisbees from his back to the dog as well as several other tricks as well. (C) throws a red frisbee at a white and brown dog and the dog catches it and brings it back. (D) watches an occasional black dog as he practices tricks with his dog along with others.
C