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 make a simple hot compress for muscle pain [title] Run water from the tap until it is hot. [step] You may want to heat water on the stove or in the microwave, but you have more chance of burning yourself if you heat the water in this way. Instead, run the hot water from your sink to a temperature that is just hot enough for you to tolerate. <sep> (A) [substeps] Pour the water over the wound, rather than across it, and try not to let it overflow. Stick your fingers, or any other hand instruments closest to the wound, in the hot water. (B) This way, you don't put your elbows or head under the water and burn yourself. [substeps] Another option is to massage the water out using a hose. (C) [title] Find a towel that is large enough to cover your injury. [step] Fold a towel or washcloth to cover only the area you want to place the compress on. (D) [substeps] The water should be roughly the same temperature as the temperature of your body. If you do not have access to a water faucet at home, you may consider using a kettle to conduct the water.

Ex Output:
C

Ex Input:
[header] How to cure swollen gums [title] Talk with your dentist. [step] Make an appointment with your dentist if you notice that your gums are bleeding or irritated throughout the day. You can also bring up this issue with your dentist when you see them every 6 months for a cleaning. <sep> (A) [substeps] You can also get a referral to a dietician who specializes in simply treating swollen gums at home. They may be able to diagnose swollen gums by looking at how your gums feel. (B) You can ask that your dentist discuss all of the possible treatment options with you. [substeps] Your dentist will likely order annual x-rays for you. (C) Dentist visits will help clear up any bleeding and ease your pain. [substeps] Some gums naturally bleed after eating. (D) You might end up visiting your dentist twice a year for repeated cleanings. [title] Avoid gum infections if you suffer from a periodontal disease.

Ex Output:
B

Ex Input:
[header] How to get rid of a hangover [title] Drink plenty of water. [step] The dehydration caused by alcohol consumption needs to be tackled if you are to get rid of your hangover. The most straightforward way to re-hydrate yourself is simply by drinking lots of water when you wake up. <sep> (A) [substeps] Try not to drink liquor if you're not used to it. Alcohol can dehydrate you, lower your blood pressure, and lower your electrolytes. (B) This will prepare you to function at more or less normal levels and will help you to wind down faster. [substeps] Drinking from a bowl of clear or glass water rather than a plastic cup will keep you hydrated and promote high heart function. (C) Drinking bland fluids that are easy on your digestive system will help you replace lost liquid without irritating your stomach. [substeps] Drinking a pint of water before you go to bed will help to lower your dehydration levels before you wake up. (D) Most people experience dehydration at some point during the day. [substeps] Normal dehydration is usually due to swelling of the liver, which generally lasts a few days.

Ex Output:
C