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".
Input: [header] How to clean partially erupted wisdom teeth [title] Brush your erupted wisdom teeth with a narrow-headed toothbrush. [step] Keeping your mouth clean, including the area of your partially erupted wisdom teeth, is vital to your oral health. It is easiest to clean your partially erupted teeth with a narrow-headed toothbrush because it can clean the hard-to-reach spots that normal toothbrushes can't get to. <sep> (A) [title] Scrape any debris out of your brushing bar. [step] Even though your infected teeth may still be present, there may be a cavity that needs to be scraped. (B) Bacteria can thrive in hard-to-reach places, like on the front of your teeth. [substeps] You can purchase a non-iodized-activated activated charcoal toothbrush for about $20. (C) [substeps] Brush at least twice a day, including in the morning and before bedtime. You may also want to consider brushing after meals to help remove any debris that may be lingering. (D) Instead, try using a toothbrush designed for erupting wisdom teeth. [substeps] Gently brush your impacted wisdom teeth in circular motions and keep the brush rubbing against the outer surface of your teeth.
Output:
C