Given the task definition and input, reply with output. 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 black screen appears and on two separate screens the words "bangkok" appear on one and "vans go skateboarding day 2014"appear on the other. a large group of people <sep> (A) take off, perform various tricks and then the boys take off in their bicycles. (B) are out in the city, some are carrying flags, some of have black balloons and they are skateboarding on the roads while people on the sidewalk watch them skate by. (C) skateboard on sidewalks and when there are holes floating through the water the cars are caught in it, a ball is thrown, then all of the people continue their skateboarding day getting a footing. (D) are seen standing around a restaurant and skateboarding around a bowling alley.
B