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".

The black cat is sitting right next to her and playing with the yarn while the brown cat is watching them. the black cat <sep> (A) grabs the yarn ball and start playing with it. (B) got up and the brown cat followed, then the black cat walked in front of the ball smoking a cigarette. (C) is enjoying the yarn being knit in her lap. (D) is smiling to the camera smiling as he uses his claws to draw the yarn on the blue yarn.
A