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 prepare a macrobiotic diet [title] Base 40-60% of your diet around organic whole grains. [step] According to the macrobiotic diet, grains are healthier for your body and help maintain your energy balance. Great options include oats, barley, millet, brown rice, quinoa, and corn. <sep> (A) Your meals should be built around your grains. [substeps] Avoid processed grains, such as bread and pasta. (B) [substeps] The macrobiotic diet is comprised of only three major types of grains: oats, white rice, quinoa, and whole wheat flour. Both flour and white rice provide calcium and vitamin d, in addition to many other vitamins and minerals. (C) Only buy grains in low-sugar brands and stock them with these foods. [substeps] Fresh, whole-grain varieties are fine for starchy foods like bread, rice, and pasta. (D) [substeps] You can also make your own whole wheat pasta by substituting bread for flour, rice, and oats. Dry aging recipes such as white pasta or whole wheat pasta also use enriched ingredients, like oats, so make sure you sample your whole wheat pasta regularly.
Output:
A