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 polish rocks [title] Choose the right rock. [step] You can polish any stone you wish, but there are certain characteristics of a stone that will make it easier to polish. If you want an easy stone to polish, pick a somewhat softer stone like onyx, limestone or calcite. <sep> (A) [substeps] You can polish diamond, granite or ceramic stones by cutting thin pipe holes or inserting dry mortar into one side of each hole. Look for a stone that resembles a diamond, but not necessarily a diamond. (B) Otherwise, a smoother, more pumice-like stone will be more difficult to polish. [substeps] Emeralds and equilateral manganese are both excellent mineral polishes. (C) Stones that are very hard will take a much longer time to polish. However, though hard rocks take a long time to sand, they yield more shine than softer rocks. (D) Softer rocks will actually work more well, and might look better to polish very old stones, but brighter stones tend to chip quicker. [substeps] Rubies, sapphires, and emerald are good options.

Output: C


Input: Consider Input: The boy watches his mom vacuum as he jumps on the bed. The boy then lays down on the bed as he sees his mother finish the job. then the boy <sep> (A) shows his stomach as she vacuums the bed. (B) plays the accordion and pans the camera to his dad playing the accorion. (C) plays with some toys and walk down a street as he looks at a lot of houses. (D) gets off the bed and jumps down to the ground to look under the bedside table.

Output: D


Input: Consider Input: [header] How to make sumptuous snow white delight [title] Place an 18 centimeter (7.1 in) loose-bottomed cake tin on a sheet of grease proof paper and draw around it. [step] Cut the circle out. Dip a piece of kitchen towel into a little butter and rub it inside of the tin, then pop the paper circle into the base of the tin. <sep> (A) Fry enough of the butter to dissolve, but not so much that it pools around. Press the baked cake gently onto a greased cake tin. (B) As soon as the bottom of the tin rings up, tap the area off with a hammer. [title] Roll the cake tin's base in icing or cream, depending on your own tastes. (C) [title] Break the chocolate into a saucepan, then add the butter and condensed milk. [step] Melt these ingredients on a low heat. (D) [substeps] Discard the paper when done to save it for future piping activities. [title] Fill a smaller cake tin with 4 ½ inches (1.2 cm) of snow white.


Output: C