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:He puts a wooden slat in the door entrance. He picks the slat up. He cuts the slat. He lays the slat down again. he <sep> (A) removes the loose top half of the slat. (B) puts the board away. (C) uses another hand cut to cut a smaller piece. (D) drills it into place.
Solution:
D