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 sleep peacefully, and have good dreams at the same time [title] Relax before bed. [step] If you have a hard time getting to sleep, you should take some steps to help you relax and prepare for bed before you want to go to sleep. Spending some time relaxing and clearing your mind can help you to fall asleep more quickly and sleep peacefully through the night. <sep> (A) [substeps] Take a few breaths before bed, if you feel like you may need it. When you feel sleep approaching, take some deep breaths. (B) When you get up in the morning, make sure you have plenty of time to gather your thoughts before bed. Even a quick cup of coffee and some breathing exercises before bed can help you drift into sleep. (C) [substeps] Take a shower and do some light and relaxing activities before bed. If you can, do them before you do anything else. (D) There are lots of different techniques you can try to help you relax before bed, such as : [substeps] Practicing some gentle yoga stretching. Progressively tensing and then relaxing the muscles in your body.

Ex Output:
D

Ex Input:
[header] How to warm a horse's bit [title] Dunk in hot water, then wipe dry. [step] Heat water until it's just begun to steam, then bring it over to the stall in a bucket. Place a safety hook over the bucket and drape the bridle over it, making sure not to let the leather touch the water or the ground. <sep> (A) Dunk the bit for 10-15 seconds in hot water, or 1-2 minutes in lukewarm water. Wipe the bit down with a cloth to dry it. (B) Try to keep your head at least six inches from the water. The halter and bridle should be crimped, not tightened, to avoid fraying. (C) [substeps] You don't want the bridle to get hot. If this happens, you need to bring a band-aid or thick covering of newspaper over the cloth. (D) Smooth out any wrinkles so the bridle stays in place. [substeps] When you go to wash the bridle, look in the mirror to see if it fits.

Ex Output:
A

Ex Input:
[header] How to treat police stops [title] Know when an officer has the right to stop you. [step] Any type of moving violation (which includes driving an unsafe vehicle) is considered legal grounds for a stop. Additionally, an officer can follow you and wait for you to commit a traffic violation. <sep> (A) [title] Understand when an officer does not have the right to stop you. [step] A police officer cannot pull you over because of your age, race, or sex. (B) [substeps] In many jurisdictions, officers can stop you for such a violation even if you are running at full speed. If an officer says " stop " to stop you, you immediately stop for the duration required by law (for example, if you are nearing a stop sign). (C) In these situations, you can request a fine or arrest warrant from the police. The officer may do everything in his power to stop you from doing so. (D) [substeps] Don't back down slowly or deliberately. If the officer tries to force you to stop, do not comply with their order unless you have a valid reason.

Ex Output:
A