You will be given a definition of a task first, then some input of the task.
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 increase your energy levels using purslane [title] Eat fresh purslane. [step] Typically, whole foods provide more balanced health benefits than supplements. If at all possible, use purslane in its natural form. <sep> (A) Purslane is for you and processed foods. Your body cannot necessarily read the purslane in the food. (B) [substeps] You may also want to cut or shelve local walnuts. These walnuts help to prevent cholesterol from entering your body while breathing. (C) For example, you can substitute common purslane, which is found on every populated continent of the world, for lettuce in a salad. A local farmer's market, a neighborhood produce shop, or a grocery that specializes in health food should carry purslane. (D) Purslane seeds are typically pumped directly into your body. Purslane seeds will give you good energy, and may help even lower your levels of insulin and on-the-go hypertension.
Output:
C