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: [header] How to buy common stock [title] Find an online broker. [step] The easiest way to work with a broker today is online. You'll open an account with the broker and then deposit money into the account. <sep> (A) When you receive money back, you can make your payments without a current account. Brokers are licensed to do large, complex transactions, so don't hesitate to go to a broker if you are buying large amounts of stock. (B) Then you can search online for those stocks you're interested in investing in. [substeps] Some financial brokers you may consider are miller, a&m, airchat, and bankrise. (C) You can find online brokers by searching online. Some of the more popular include the following : [substeps] Charles schwab e * trade td ameritrade optionshouse [title] Identify if you want a full-service broker instead. (D) Most brokers offer deals to you either on your own or at low interest rates. However, if you don't have an online broker, you should look at a few online brokerages in your area.
Example Output: C

Example Input: A woman in track pants and her daughters wash a small dog with soap and water in a bucket on a patio. a woman <sep> (A) uses a cup to pour water on the dog to remove the soap. (B) runs down a track and jumps into a sand pit, then a little girl takes her turn jumping into the sand pit. (C) is kneeling on the grass on a small tilled field, holding a sapling. (D) goes out to interview a dog person on a patio patio.
Example Output: A

Example Input: [header] How to choose a quality answering service for your business [title] Know what makes great customer support great. [step] Focus on them and work on them well to provide the best support your clients will benefit from. [title] Know also what makes bad customer support bad. <sep> (A) [step] Just like knowing the important factors affecting how well an answering service can work for your customers, you should also be aware of the common factors all bad customer support services have. Delayed response time? Operators not able to provide solutions that works? Knowing what these factors are can help you avoid using them. (B) [step] The best policies are trust-breakers and if you tell your customer that is not enough to do what you say, then things won't go smoothly. Also pay attention to the focus of your customer service based on how often you ask the customer to return phone calls as well as the professional atmosphere of the business. (C) [step] A good sign for having better customers is whether there is this rating on the system. Often, they lack this rating because they have higher billing hours. (D) [step] For example, you should sit down and consider why the customer service providers you choose are offering you good service. They might be trying to get their customers to fill up slot on their website.
Example Output:
A