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".

Input: Consider Input: [header] How to teach your dog to speak [title] Choose your reward. [step] Pick something your dog really loves; the better the reward, the easier it will be to teach your dog. If your dog loves to play, you can try using her favorite toy and playing with her when she barks. <sep> (A) In some cases, you can train your dog to bark through verbal praise. [substeps] Figure out your dog's reward based on cultural context. (B) Point out what your dog likes to play with and put a look on the chart indicating what she wants to learn. [title] Tell your dog to " sit ". (C) Most people, however, will find that treats are the most effective way to teach a dog. The best treats will be ones your dog loves, and which are also easy to carry, easy to break into pieces, and healthy. (D) If her bark is off-putting, encourage her to try other tricks, to avoid barking. [substeps] If you provide a toy or two, this will be enough to train your dog to try the reward.

Output: C

Input: Consider Input: [header] How to calculate a light year [title] Define the light year. [step] A light year is a measure of distance equal to how far light travels in one earth year. Because distances across the universe are so large, astronomers use light years. <sep> (A) However, they can also be determined by dividing by a distance. [substeps] Some light years are used year-round. (B) For light year 2014, the main determiner is the sun. In the light year, the world is filled with light bulbs. (C) Without light years, discussing the distance between two stars would require the use of large, unruly numbers. [substeps] Another measure of distance you may come across when learning astronomy is the parsec. (D) [substeps] There are two kinds of light years: day and night. The two types of light years are known as night and day.

Output: C

Input: Consider Input: [header] How to redefine yourself [title] Determine what defines the current you. [step] To move forward and redefine yourself, you will have to begin with understanding who you are at this point in time. Look at your life objectively : [substeps] Ask yourself what your values, goals, and dreams are. <sep> (A) You can start by creating a list, or use a personal assessment exercise to narrow them down. Consider what you are actually prioritizing in your life right now, and see if it matches who you want to be. (B) Understand why your values and goals change over time. Are you just living where you're happy, or are you living where you're sad? Find out what you expect in your future. (C) Define who you are as a person and what your values are. Are you trying to replace the bad that has brought you so much trauma or disappointment? How do you want to be remembered for this? [title] Examine your values. (D) Think about what you have achieved in some of your past or future life. Think about what you continue to expect of yourself.
Output: A