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".

[header] How to prevent tartar [title] Brush your teeth at least twice a day. [step] In order to remove plaque from your teeth, and in turn prevent tartar from developing, it's important to brush your teeth. Brushing twice a day is recommended to keep plaque and tartar at bay. <sep> (A) Brush as much as twice a day depending on your current regimen. [substeps] Brush the outside surfaces of your teeth to break up plaque and tartar. (B) [substeps] Typically, you should brush your teeth in the morning when you get up and in the evening before you go to bed. However, pick a brushing schedule that works for you and stick to it. (C) [substeps] When brushing, use gentle circular motions that brush the gums and edges. Focus on areas that are clogged with tartar. (D) [substeps] Using a toothbrush or a regular brush, brush your teeth twice a day. Double your brushing schedule each time you brush your teeth to help eliminate plaque.
B