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 sell dvds on amazon [title] Register for an amazon seller account. [step] Go to amazon's seller central site to sign up for a third party seller account. Fill out the registration form with your name, email address, and unique login password. <sep> (A) Once your account has been activated, you'll be able to sell your used items on amazon. [substeps] You may also be asked to provide some basic financial information, such as your debit card or bank account number. (B) Agree to the terms and conditions of the seller account and click on " register " at the bottom right of the page. You will receive your cd rental rights next to your name. (C) [title] Copy your dvd, videos, or files onto your home screen using the same link on the seller main page. [step] Make sure this link is easy to write and that your dvd is in a separate folder for storage purposes. (D) Most sellers will require you to provide a proof of registration and identification number before you can register. [substeps] If you don't yet have an amazon account, you can register this online or in person.

Output: A

Input: Consider Input: [header] How to recognize symptoms of sickle cell disease (scd ) [title] Get tested. [step] Sickle cell disease can be detected with a simple blood test, so if you think you may have the disease, see a doctor to get tested right away. In the united states, all newborns are required to be screened for sickle cell disease. <sep> (A) [substeps] The screening process is lengthy and requires some paperwork so a doctor can make sure they're perfect. In order to receive diagnosis or treatment, the doctor must first perform a screening test. (B) The more advanced the developing disease, the more likely it is that you may have sickle cell disease. It is a serious disease that causes weight gain, and may affect when you are pregnant. (C) The centers for disease control and prevention (cdc) website has more information on the disease than it does on its own. [title] Be aware of your potential risk factors. (D) This is because early treatment is very beneficial to patients. [substeps] It is also possible to do prenatal screening for sickle cell disease by testing fetal tissues that are collected by chorionic villus sampling or amniocentesis.

Output: D

Input: Consider Input: [header] How to substitute pornography [title] Find fun activities. [step] Instead of temporary pleasure that you may feel guilty about later, invest in your happiness. If you don't have any work to do, then start doing what gives you happiness (porn gives pleasure, not happiness). <sep> (A) Meetup.com provides fun and downloadable activities. [substeps] If you love reading, then find something reading. (B) Create activities that take your mind off the sugar and waste accumulated in the body. [substeps] For example, you might take your cat for walks every sunday morning, play charades, take a walk in your neighborhood, or watch a funny show on youtube. (C) Instead of spending time watching pornography as it is relaxing and educational, use it for fun and discovering how the world works. Take that step and visit your local library and check out reviews. (D) Find activities that take up a large chunk of time that will allow you to get out of the house or at least be occupied for a substantial amount of time. [substeps] Invest in some hobbies you find enjoyable, especially social hobbies that allow you to make friends and have fun.
Output: D