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 stay calm during road rage [title] Recognize your rising anger. [step] The most obvious signs of anger are often physical symptoms that emerge after the fact (like voice tone, language, and gestures). But with practice, you'll learn to recognize the warning signs of anger when you mentally check in on yourself. <sep> (A) When you're angry, you'll recognize them as part of your subconsciously hunting instincts. [substeps] Common signs of anger include: a car slamming on its brakes or a fire ensuing, which should be quickly and unequivocally obvious. (B) Your body is responding to these moods : [substeps] Your heart rate increases or drops. Your heart is racing, your breaths are rapid, and you're sweating. (C) [substeps] Most of your response time should be repetitions of the actions or sentences that trigger your anger. Often, this response is triggered by one or more things that remind you to be relaxed, both positive and negative. (D) [substeps] Common signs of anger include angry/vengeful thoughts, muscle tension, headaches, or elevated heart rate. If you catch yourself speaking out loud (even when you're driving alone) about another driver, you may be experiencing elevated anger.

Ex Output:
D

Ex 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.

Ex Output:
A

Ex Input:
[header] How to be an effective engineering student [title] Go to class. [step] Yes, every class. Falling behind in engineering school is almost impossible to recover from, so don't miss class unless you absolutely have to. <sep> (A) If you need to let enough time pass, however, that shouldn't take long. If you leave your class unsupervised, you will likely never be able to focus on work, and will suffer the pain of your slips as a result. (B) As you learn more about engineering, look for other courses that you can dedicate time and energy to. That way, you won't be late for any classes and your grades will be better. (C) [title] Get into a panic if you don't know what to do. [step] You will not be able to make a good grade if you make a mistake because you are always late and will seriously regret an outcome like beating a pencil sharpener. (D) [substeps] Try to never miss a class unless there is a mandatory event you have to go to or you are very sick. Make it a top priority to personalize your class schedule to fit your availability.

Ex Output:
D