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".

Ex Input:
[header] How to use docusign on pc or mac [title] Open the docusign email. [step] Use this method if someone sent you an email containing a docusign document that must be signed. [title] Click review document. <sep> (A) [step] This will take you to the archived documents section. [title] Click the document you wish to delete. (B) [step] When the email is finally redirected to your email inbox, you'll see a checkmark beside the discussion item (e.g.: " news sources "). [title] Click the checkmark next to your reference item item at the top of the current page. (C) [step] Your document will have been reviewed by the ftc. Ask for experience diagnosing ftml errors. (D) [step] It's the yellow button in the email. [substeps] If the sender requires you to verify your identity, follow the prompts to do so.

Ex Output:
D

Ex Input:
[header] How to dry your hair [title] Pat your hair dry with a towel. [step] If you can, try to use a microfiber towel. Microfiber towels are soft and gentle on all hair types. <sep> (A) Avoid using dull towels, since they make hair really dry quickly. [substeps] If you're in a hurry, dampen a microfiber towel with some water and wring it out. (B) You don't need to rub the towel over your hair, just pat it dry. [title] Choose a hair shade that reflects well. (C) They are less likely to snag, rip, or tear your hair than regular towels. Microfiber towels can also help reduce frizz. (D) Make sure to pat the towel dry gently and without abrading your hair. After drying, use the apple cider vinegar spray to gently splash your hair with cool water.

Ex Output:
C

Ex Input:
[header] How to treat tumors [title] See your doctor if you find a tumor or experience unusual symptoms. [step] Schedule an appointment as soon as you notice an unusual lump, growth, or changes in a body part's texture, size, or shape. Many people don't have any other symptoms, but you might experience pain, weight gain or loss, weakness, or changes in appetite. <sep> (A) [title] Examine your body for lumps or changes in skin color. [step] In order to diagnose tumors and changes in skin colour, you will have to examine your body for lumps and changes in texture or color of your body. (B) Seek medical attention as soon as possible if you find a lump, pattern, or abnormality. [substeps] As with tumors, tumor growth can make a person susceptible to cancer. (C) [substeps] These symptoms could be due to a variety of causes, and an unusual lump could be a cyst, fatty deposit, enlarged lymph node, or inflammation. Your doctor will need to perform tests to make an accurate diagnosis. (D) The tumor can become larger in size, spread out, or produce larger recs, enlarged lumps, painful bumps, or changes in the texture. [substeps] Tumors can develop around the surface and cause infection.

Ex Output:
C