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 get rid of psoriasis [title] Try topical corticosteroids. [step] Topical corticosteroids are usually the first treatment recommended for psoriasis. If used correctly, they can be quite effective. <sep> (A) This is because they help numb the affected area, ensuring you don't get any kind of rash. When corticosteroids begin to wear off, the swelling will be reduced and the cysts will no longer be painful to move. (B) [substeps] Corticosteroids come in a variety of types. There are sprays, creams, gels, ointments, solutions, and foams. (C) [substeps] Topical corticosteroids have antihistamines into them that decrease inflammation in the skin. Usually you should apply it on the skin around your psoriasis affected area and leave it on for about a minute before rinsing off. (D) Corticosteroids prevent the spread of psoriasis across skin, with some cases being the result of pigmentation, or melanin production. However, most cases of psoriasis have only a modest effect, and involve no pain or discomfort.
Output:
B