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: A mini pool table has a set of colorful pool balls set up in the middle in a triangle shape and the white ball is alone. a man <sep> (A) walks into the pool room wearing an orange swimsuit and begins playing with the ball as a lot of people are standing around by the pool. (B) approaches the mini table, touches the white ball and moves it into position to hit it with the pool stick. (C) is talking to the camera and showing various machine that appear to be emergency preoutfits. (D) of average height, wearing a blue shirt and glasses competes pool holding a rubik's cube on his right hand, a current type of swiffer machine machines sitting on a mat with two wheels to help you.
Example Output: B

Example Input: [header] How to select a vinyl liner for your inground pool [title] Choose a basic pattern. [step] When choosing the tile line, make sure you choose a basic pattern with natural colors. You can choose various blues, deep beige tones, and grays. <sep> (A) Reds, whites, and terracotta colors stick out. It is not necessarily a good thing is because a vinyl liner is mirroring real tile. (B) You can also choose colors which enhance the cohesion of the walls, giving it a softened feel. Stick with one color that complements the room and feel of your pool; if you use charcoal blue, make sure it matches the shade of the pool. (C) Some great options include : [substeps] Pale blues, ranging from cream to peach. Indigo, such as cream, beige, and ivory. (D) Pick the patterns that complement your pool color. [substeps] Pick patterned herringbone tiles if you have very different colors, like aqua blue, light tan, and jet black.
Example Output: A

Example Input: [header] How to buy a flat iron [title] Determine your hair type. [substeps] Consider whether your hair is fine or thick. Fine hair requires less heat to straighten. <sep> (A) Curly hair needs less curl in order to increase the volume, and heavy hair needs less curl in order to achieve a sleek, beach-like look. Generally speaking, medium, or thick hair should be naturally smooth and soft. (B) Thick hair is much harder to straighten because the individual hairs are coarser, causing them to have less moisture. Those with curly or wavy hair should purchase an iron with a higher heat setting. (C) Thick hair needs more dry heat so soft (but not very dry) hair will not straighten as quickly. Fine hair of all hair sizes, shapes, and hair types generally require a lot of straightening. (D) Thin people take less heat to get what they want because the hair fibers are the stronger. Thin people usually avoid blow drying because their hair comes much more naturally when it is dry and soft.
Example Output:
B