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". 

[Q]: [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.
[A]: C


[Q]: [header] How to make black coffee [title] Purchase freshly roasted, whole bean coffee. [step] If you can't purchase it directly from the roaster within a week or so of it being roasted, opt for a vacuum-sealed bag from a reputable national coffee-bean roaster. [title] Purchase your own coffee grinder, or grind it in the store. <sep> (A) [step] If possible, choose a burr grinder in place of a normal blade grinder. For best results, grind the coffee fresh right before brewing each day. (B) [step] Grind coffee beans in the near-black zone of a coffee grinder. You can use either a regular-size grinder or a pre-grind grinder to grind your coffee. (C) [step] Modern coffee grinders have drawbacks, as they require higher temperatures to make purified coffee. Where possible, purchase one that comes pre-boil. (D) [step] Print it onto a piece of paper, remove the lid from the coffee grinder, and grind the coffee beans in the machine's center. [title] Unplug the coffee grinder and plug it into the wall outlet.
[A]: A


[Q]: [header] How to set up international mail forwarding services [title] Assess your needs. [step] There are many options when it comes to mail forwarding services. Each company offers the same basic services, but there are often customizable factors that might make one service plan preferable over another. <sep> (A) [substeps] Many companies offer package tracking, though the tracking options may be limited to the country of origin or the country where you'll be receiving your package. Most services will forward letters and correspondences. (B) Generally, you need to decide how much time you want to spend reading each email. [substeps] Think about what physical space you want to use for your information. (C) For example, you might consider an air carrier server when you work on a small local business, and one remote server to operate out of. For example, direct carriers may be better, but same basic things are still held by most independent email providers, as these providers do not need to be registered. (D) If you need to reserve an internet connection and your internet connection is a cellular/landline connection it will be much easier for you to monitor that internet connection, such as content from the blogger page. [substeps] Consider online plans such as a group chat, digital chat, and instant messaging.
[A]:
A