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 be a cute girl in middle school [title] Maintain good personal hygiene. [step] To look fresh and clean, make sure you shower and wash your hair regularly. Brush your teeth before school each morning, and wash your face with a facial soap of your choice. <sep> (A) Brush and floss twice a day to get rid of dead skin. Be sure to use a good shampoo on your hair. (B) [substeps] Wear deodorant to keep you smelling fresh, especially if you'll be participating in gym class or an after-school sport. Aiming to wash your hair every other day is a good way to keep your hair clean and healthy. (C) Make sure your clothes are clean and free of dirtiness. Don't wear baggy or silly clothes, as you don't want to show off your physical body. (D) Then for the day, put on clean, feminine clothes, which in this case will be sweatpants, ballet flats, a clean shirt, and a cute pair of fluffy sneakers. Apply body conditioner to your hair daily to hold it in place until you get out of class.

Ex Output:
B


Ex Input:
[header] How to make silver nitrate [title] Wear proper protective equipment. [step] The chemicals necessary for this process are highly toxic and can lead to injury if not handled properly. Eye protection, gloves, and a lab coat are necessary to remain safe. <sep> (A) You should also wear long, loose sleeves or long pants to protect yourself from these hazardous chemicals. Be sure you wear good quality work clothes. (B) Long pants and closed-toe shoes, preferably without mesh, should be worn to protect against floor spills. [substeps] Eye protection should completely cover your eyes and the sides of your eyes to protect from splashes. (C) Your lab coat can protect your skin and prevent pollution while working. Ask your local hazardous waste management company to provide you with an appropriate safety gear. (D) Wear full, protective safety gear as well to get the job done effectively. [title] Choose a location for your lab lab.

Ex Output:
B


Ex Input:
[header] How to boost immunity with exercise [title] See your doctor. [step] Almost any person can boost immunity through exercise. However, what exercises and times are best for you may vary depending on your overall health. <sep> (A) Schedule an appointment with your doctor to see you are able to do a moderate exercise program to stimulate your immune system. This can ensure you are healthy enough for exercise, especially if you aren't currently exercising. (B) Call your doctor before starting any exercise regimen to check for specific recommendations or guidelines. Be sure to get this information before you begin any one-on-one activities so you don't put unnecessary stress on yourself. (C) Talk to your doctor about starting a exercise regime for yourself, and discuss which exercises and times fit into your schedule. [substeps] Your doctor will want to see your physical and mental health so that he/she can make sure that your body is healthier. (D) Speak to your doctor about which exercises are beneficial for you and consider ways to increase your immunity. [substeps] Periodically check your calorie profile to determine the recommended amounts.

Ex Output:

A