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".
Q: He closes an oven door that is open. He continues to mop the floor. He picks the mop up and puts it in the air. he <sep> (A) continues mopping the floor then the door. (B) puts a powder on the mop to dry is then goes back to mopping. (C) sets it down and continues mopping. (D) removes the mop from a position near the oven door.
A:
C