Teacher: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".
Teacher: Now, understand the problem? Solve this instance: A man has climbed a large ladder outside. He is using trimmers to cut and trim large trees. he <sep> (A) reaches up, cutting the branches and twigs. (B) moves faster, still using trims. (C) comes down the ladder, shining the trimmers. (D) is cutting the top here and there of the trees.
Student:
A