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". 

Example Input: A woman is shown leaning against a wall. Several ballerinas are shown in a room. different techniques <sep> (A) are demonstrated by them. (B) are shown for performance. (C) are shown for ballroom dancing. (D) are shown to teach the groups how to dance.
Example Output: A

Example Input: [header] How to start a taxi company [title] Investigate whether there's a need for a taxi company in your area. [step] In smaller towns, the demand for taxis usually isn't so high, so considering a different location to start a taxi company might be a wise choice. [title] Determine your niche. <sep> (A) [step] What is the ideal type of taxi company or whether the need is a strong job market. However, there's also a reason you could (and probably should) start a taxi company for a fee. (B) [step] Taxi companies and vegans have a pressing concern in their treatment for foreigners in countries. Decide what you wish to be used for based on your niche and behaviors when applying for a taxi company. (C) [step] Though most taxi companies cater to all types of customers, there are those that cater to high-end clientele such as politicians, diplomats, and executives. Other taxi companies offer adapted vehicles for the physically impaired, while yet others provide green taxis for environmentally-conscious customers. (D) [step] To start a taxi company, you will first need to determine your own niche, and how much money you're willing to spend on the service. This is where you'll be able to make the hiring process go more smoothly.
Example Output: C

Example Input: [header] How to shave your face [title] Choose an appropriate razor. [step] You should take into account the coarseness of your beard hairs, the texture of your skin, your preferred shaving method, and other details when choosing a razor. Generally speaking, for heavy-bearded men with more sensitive skin, it is generally good to use a traditional multi-blade razor. <sep> (A) A more expensive variety, however, may suit you. [substeps] If possible, choose a razor with a finer blade, like the ninja rat razor (also known as ninja rat 4) or saber (also known as elderrawal 2). (B) [substeps] Electric razors are convenient and quick, requiring less preparation before shaving than safety razors, and are somewhat gentler on sensitive skin. For some types of hair, however, they tend to leave an uneven or patchy shave on the face. (C) You may also want to check ahead of time which method is best for you. [substeps] Before shaving, you should consider using a traditional electric razor. (D) [substeps] The point of a professional shave is to smooth the beard hair and keep your razor soft and and straight. Using a razor is not only effective, but to save yourself the stress of sawing through to scar a smooth, beautiful beard.
Example Output:
B