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". 

Input: Consider Input: Young boy talks to camera in front of drum set in a studio. young boy <sep> (A) plays on the drum set, and the cymbals, while intermittently speaking to the camera. (B) starts taking steps standing on a pedal holding a tool an trying to play an instrument. (C) drum set talk to camera and hold a dummy and cymbals. (D) starts unpacking drum set drum set as the camera captures his movements.

Output: A


Input: Consider Input: A small group of people are seen lifting a large object into the back of a van and close ups of them and a building. The people are seen riding around a large gymnasium on roller blades performing various flips and tricks. the boys <sep> (A) continue skating around and interacting with one another and performing impressive tricks. (B) continue riding around a sports stadium and performing tricks. (C) play the drums while riding around on bouncy chairs that run in a tight group. (D) ride around again in the end with more people watching on the side.

Output: A


Input: Consider Input: [header] How to celebrate national boss day [title] Give a gift to your boss for altruistic reasons only. [step] It's not wise to give your boss a gift only because you are expecting something in return, such as a raise or a promotion. The reason national boss day was created was in order for employees to show appreciation to their bosses. <sep> (A) Therefore, it's better for your boss to give something in return. [substeps] For example, if your boss wants to buy a new computer, give it to the company first. (B) Furthermore, your boss definitely wouldn't give work to his boss in return. It only needs to be small, money-making gifts or things to show appreciation. (C) [substeps] Human resources employee receives food, toys, clothing, and even property. Use your boss day's goal of bonuses as a reason to have more gifts around. (D) [title] Enlist the help of your co-workers. [step] Many employees band together and pitch in for a gift for boss's day.


Output: D