Definition: 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: [header] How to clean a seat belt [title] Pull out the seat belt. [step] Vigorously pull the belt forward until it is stiff and doesn't move anymore. When this happens, the entire belt will be unspooled and much easier to reach. <sep> (A) [title] Run a plastic scraper along the inside of the belt. [step] It's better to be careful than to damage the plastic. (B) If you are comfortable keeping your legs apart, pull out the seat belt and give it a good scrubbing with a hose set to medium. Using a nylon pull belt should provide you with some success for that purpose. (C) [substeps] Note that you should only pull out the seat belt if your manual safety toggles off. [title] Apply vinyl seat wax to the belt. (D) [title] Place a clamp near the belt reel. [step] Follow the belt strap upwards and locate the reel.
Output:
D