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 use an exfoliating foot peel [title] Wash your feet. [step] To ensure that there isn't any dirt, oil, or other residue that might prevent the peel's ingredients from penetrating your skin, you should wash your feet. Use warm water and your usual body wash or soap to get your feet clean. <sep> (A) [substeps] Be sure to wash them for about 20 minutes, as rinsing can irritate them. If your feet are particularly delicate, you might want to exfoliate them after being in the sun. (B) [substeps] It may be convenient to apply the exfoliating peel after a shower or bath because it's easier to wash your feet that way. [title] Soak your feet for several minutes. (C) [substeps] You can use this rinse when you've washed and done a scrub. [title] Exfoliate on your feet when you're feeling rough. (D) [substeps] Especially if your feet are already quite dry, rubbing them with water or rubbing a soft washcloth on them may stimulate an exfoliating facial. [title] Exfoliate the skin on your feet.
Output:
B