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: There is a large decorated christmas tree behind them. There is a woman sitting in the living room with a little girl. the boys <sep> (A) begin to climb hill on the christmas tree with an orange garland and used a brush. (B) play foos ball with the men. (C) are showing the little girl how to pierce her nose piercing. (D) start to play as the woman continues knitting the tree.
Example Output: B

Example Input: [header] How to study the phenomenon of light as a nonequilbirum state of matter [title] Understand how thermodynamic systems are categorized. [step] Thermodynamic systems in nature are divided into two types. One is systems that are at equilibrium state with the environment and the other is systems that are in a state of nonequilibrium with the surroundings. <sep> (A) On earth, nature has a preference for systems that are at an equilibrium state with the surrounding. This is so due to the principle of minimum energy that every object in the universe aspires to have. (B) For example, gas rising in temperature throughout the day can be divided into microorganisms in the environment. [substeps] For example, gas rising in temperature in the atmosphere can be divided into molecules in the environment. (C) [substeps] Equilibrium is fundamental in thermodynamics. Other systems include stars, planets, and oceans. (D) [title] Learn about the term " rock hydrodynamics ". [step] Rock hydrodynamics refers to the transfer of water to the earth's surface.
Example Output: A

Example Input: [header] How to write paranormal romance [title] Make sure you know exactly what the definition of paranormal romance is. [title] Create a mind map to generate ideas. [title] Make use of your fascination, obsession, fetish or desire. <sep> (A) [step] Everybody has at least one of these things. Now it's a great time to use it. (B) [step] This means that you must know what's so tempting. You must have some sort of reason to pursue your fascination. (C) [step] They will help you convey your emotions. Some days the best ideas were by looks, other days they were by tastes. (D) [title] Figure out what the meaning of your love for this season. [title] Be imaginative and analyze your romantic feelings.
Example Output:
A