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: Consider Input: [header] How to numb a tooth [title] Take an over-the-counter-painkiller. [step] A painkiller like ibuprofen or acetaminophen should be your first step in trying to numb a painful tooth. These painkillers will alleviate the pain from your tooth, and should also decrease any swelling in the infected area. <sep> (A) [substeps] If you are not able to find ibuprofen, you can opt for acetaminophen instead. [title] Freeze food that contains aspirin. (B) [substeps] Ibuprofen can be applied within 30 minutes to up the duration of an over-the-counter painkiller. Follow the manufacturer's instructions and do not take ibuprofen within 30 minutes after it has been applied. (C) [substeps] Make sure you read and follow the dosage on the packaging. Do not eat anything until told to do so by your dentist to ensure you are following the proper dosage. (D) These are all readily available at your local pharmacy. [substeps] If you're treating a toothache in a child younger than 18, do not give him or her aspirin.

Output: D


Input: Consider Input: [header] How to buy alcohol online [title] Order alcohol only if you're of legal drinking age. [step] Buying online might seem like a good option if you are underage, but it can land you in a lot of trouble. The law limits the drinking age for a reason. <sep> (A) Don't put yourself in a bad situation! [title] Follow the same laws for buying locally in your area. [step] Ordering online will not exempt you from your area's restrictions on buying alcohol in person. (B) ( even better, it isn't illegal. ) read the laws when you are curious about your choice. (C) Nonetheless, you should look for alcohol in liquor stores or online sellers. [title] Weigh the pros and cons of ordering alcohol online. (D) You can find the rules of drinking online, and most law enforcement agencies now have regulations regarding underage drinking. [substeps] Many copyright infringement lawsuits involve the intellectual property of the other party.

Output: A


Input: Consider Input: [header] How to wear an engagement ring [title] Wear it on your left hand. [step] The ring is typically worn on the third finger of the left hand. This is the most common way to wear an engagement ring in many countries, especially in western cultures. <sep> (A) This dates back to the highly romantic idea that this finger has a vein that leads directly to the heart. That isn't true, but it's a nice thought for when you're looking down at that pretty ring of yours. (B) If your choice is to wear an engagement ring on the fourth finger of the hand, however, it will vary from country to country. [substeps] The ring itself should be worn on the ring finger. (C) [substeps] Rings come in a wide variety of shades and sizes, ranging from classic velvet to engagement rings made from precious metal. Novelty jewelry or designer engagement rings come in a variety of colors and patterns, and wear them on your right hand only. (D) [substeps] It's better to wear it on your right hand than on your left hand, because it's heavier. [title] Wear it with skinny jeans and boots to give some balance.


Output: A