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". 

[EX Q]: [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.
[EX A]: A

[EX Q]: A crowd is gathered around a black tiled area. a man in black <sep> (A) pants in front of the crowd runs a rope around a man's neck. (B) raws is talking to the camera. (C) shirt is on the middle of the circle. (D) does some breakdance moves.
[EX A]: D

[EX Q]: [header] How to add photo inside the text in photoshop [title] Open your photoshop. [title] Select your photos. [step] Gather photos you want to include in the design. <sep> (A) It can be one or more photos depending on how artistic you may be. Then go to file] open and select the ones you like. (B) To do this, click the " add " button at the top right corner of your screen. These photos will be converted into drawing images such as menu books, things like html style page picture book, and even saved photos that you want to save on your ipod. (C) [substeps] Example: you will need 2 pictures. The' toggle' button will be located on one edge of the image and the' stamp' button will be located on the other edge of the image. (D) To select the ones that you would use to create the image, select all of the photos (optional). [title] Hover over the photo that you want to rotate.
[EX A]:
A