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: There's an artist painting a square canvas board with several acrylic colors using a flat brush in a studio. she <sep> (A) is painting a christmas tree with a piece of acrylic text. (B) moves the brush across the screen several times. (C) shows how to cut the paint with the flat brush when time stops. (D) begins by painting blue strokes with the flat brush on the canvas surface.

Output: D


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: Lemon slices are scooped from a jar and placed into drinking glasses on a steel counter top. Steaming hot water is poured over the lemons in the glasses. the glasses <sep> (A) are stirred with a stirring rod. (B) are measured and rinsed off, before being topped with lemon juice. (C) are returned to the counter top. (D) are whisked and pour into a cup along with sugar, syrup, jelly, egg yolks, jelly, water, water, lemons, syrup, and other liquids as blended juices are poured into a steamer.


Output: A