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 clean a cast iron stove [title] Place an old newspaper on the ground in front of the stove. [step] Do this as a protective measure before you begin scooping ashes out of the stove, as they are liable to drop onto the ground. A newspaper will make cleanup much easier. <sep> (A) [substeps] You might even want to splash some cold water over the newspaper, so the water completely freezes around the newspaper. A drop of lemon juice can also help. (B) [title] Pour about a tablespoon of salt into the newspaper you have saved. [step] Add lemon juice and shake off the salt. (C) [title] Use the newspaper to wipe and scrape any soot out of the cast iron burner. [step] Do this several times until any soot is gone. (D) As you're spreading the newspaper, open the air dampener so that any ash stuck to it will fall into the firebox. [substeps] The air dampener will be a small knob on the front of the cast iron stove, that you should pull outward to open.

Ex Output:
D


Ex 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.

Ex Output:
D


Ex Input:
[header] How to be a productivity consultant [title] Earn your bachelor's degree in business, marketing, finance or a similar degree. [step] This is the lowest amount of education needed to become a productivity consultant. Choosing a business-related degree will allow you to launch yourself into the business world after graduation. <sep> (A) [title] Apply for an entry-level job at a company or corporation. [step] If possible, join a management track where you will learn how managers trained. (B) [title] Get a bachelor's degree in business administration or better yet, a master's degree in accounting. [step] That way, you can succeed as a consultant even with minimal experience in the industry. (C) The more work or coursework you require after graduation, the higher your startup budget will be. [title] Reach out to employers to gain access to a job. (D) [substeps] Earning your bachelor's degree will give you an edge over other college educated peers as well as financial professionals. Gaining an unrelated business degree will help you compete with other clients.

Ex Output:

A