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:
A man in yellow glasses takes a drink out of a water bottle. People are running across a finish line of a race. someone <sep> (A) falls back on the sand and gets trampled. (B) puts a medal around another person's neck. (C) crashes into the backstretch lane. (D) holds up crumpled sticky things.

Ex Output:
B

Ex Input:
[header] How to remove hair from your throat [title] Try to swallow the hair. [step] If you suspect that you have one or two hairs stuck in your throat, try to just swallow them. The hair will travel through your digestive tract like food does and your body will excrete them. <sep> (A) Pass the hair around your mouth under your tongue until you see no more hairs. It's important that you close your mouth as tightly as possible so that the hairs don't come back. (B) Sucking in the hair will leave your throat full of the hair. If the hairs are stuck in your throat, then you might want to rub a cotton ball or toilet paper over your throat to help get rid of the hairs. (C) This will open up the glycerine lining in your throat and prevent anything from coming out. [substeps] Wait a few minutes to see if they're gone. (D) Your body will not break down the hair because it's made of keratin, a dense protein. [substeps] If it feels like the hair is long, see if you can use your clean fingers to pull the hair out of your throat.

Ex Output:
D

Ex Input:
[header] How to remove chewing gum from a dryer drum [title] Spray pam cooking spray on the gum. [step] It's similar to wd-40 in that it lubricates areas and erodes sticky substances, but it's a natural alternative. If you don't have pam or a spray version of a cooking oil, you can use a bottled version of canola oil. <sep> (A) This will be more acid-free, and will result in less mess. [substeps] This spray is also very acidic, so it may stick to fabric and other fabrics. (B) It's safe to use on wet or dry of the dryer. [substeps] When using pam, try using coconut oil, which is safe to use on wet or dry surfaces. (C) [title] Rub pam under and around gum gum to loosen it. [step] You should see the gum coming away from the crack. (D) Wipe some canola oil on a cloth and rub it on the gum. [title] Soak the gum in the oil.

Ex Output:
D