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".
Problem:Man is sitting on a maching doing exercise. man <sep> (A) is working out taking a regular steps carving a triangle in the floor. (B) start pumping the pucks. (C) is doing pectoral exercises on a gym wooden room. (D) take the boxer's bag and turn it and hangs it on a wooden man's shoulder.
Solution:
C