You will be given a definition of a task first, then some input of the task.
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 in a black shirt setting up a camera while sitting in front of a rub-ix cube and a electronic stop clock. once the clock <sep> (A) reaches the meters certain seconds are counted of the video and when it says reaching 10 seconds, the player begins to talk slowly putting his hands in the air, shaking his hips then walking towards the box. (B) starts another man off camera and the man sitting in front of the cube starts to figure out the puzzle. (C) stops, the man plays the styling set for the camera and switches to a black screen with text. (D) stops, he applies tape and puts a screen on the cube.
Output:
B