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 become an endocrinologist [title] Obtain a bachelor's degree in a science-related major. [step] Though you could choose any major you want, it's best to study something like physiology, biology, or social science. These majors will help you build the prerequisite skills for medical school. <sep> (A) [substeps] If you are enjoying high school, they might teach you basic tests or techniques, like how to fight ethylene gas. Foreign nationals don't get their master's degree until they finish medical school. (B) [substeps] These degree levels will take some effort on your part, so keep an eye out for whatever college you want to attend. It's not always necessary to go to medical school if you're currently planning on med school. (C) [substeps] Enroll in or look for a program at an accredited medical school. Most states require endocrinology courses at high schools and universities. (D) In addition to studying science, you should also take courses in math, english, and the humanities. These courses can help prepare you for interacting with patients and writing reports.

Ex Output:
D


Ex Input:
[header] How to ask survey questions [title] Understand your objective. [step] Make sure you know why you are asking questions in the survey. Having a firm grasp of this will help you make better questions. <sep> (A) Without knowing your objective, your questions may seem aimless. [substeps] Try to answer the questions: who, what, where, when and why for yourself. (B) [substeps] However, you may not have a completely clear and accurate understanding of your evaluation topic. You may need the fact-figure accuracy to have a clear and reliable assessment. (C) You can additionally foster a good relationship between you and the question that came up. [substeps] Once you have developed a rapport with the question, you should begin addressing it. (D) [substeps] Determine whether the survey may be a waste of time. If the survey results in a huge number of questions, it will be better for you to leave some questions blank or to completely miss the question's significance.

Ex Output:
A


Ex Input:
[header] How to do faux locs [title] Take a thin section of hair, and apply moisturizer to it. [step] Use the handle of a rat-tail comb to take a 1 to 2-inch (2.54 to 5 , 08-centimeter) square-shaped section of hair from your hairline. Lightly mist the section with water, then apply a moisturizing hair cream to it. <sep> (A) [substeps] A combination of castor oil and coconut or olive oil would work especially well for this. You can also use any other cream you'd normally use for making corn rows. (B) [substeps] Try not to clump up your hair as you do this. In fact, a small amount of this cream can make it slippery. (C) Hold the product at your head and use a towel to remove the product. [substeps] You can purchase temporary gels in powder form, or you can create your own emo spray with real dreadlocks. (D) [substeps] The target area of this section is your hairline, so it's best to just get down to the mid-point. You can use both your hands at this point.

Ex Output:

A