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 Input:
[header] How to train chickens to return to their coop [title] Prepare your chicken coop. [step] Before you can train your chickens to return to the coop in the evening, you need to ensure the coop is set up properly for your chickens. A basic chicken coop should provide at least twenty-four square feet of space and multiple places for chickens to perch. <sep> (A) To ensure proper lighting, you will need to buy a coop lamp or turn off the overhead light. You will also need to provide adequate heat. (B) Your chickens will probably also need a hutch, cart, or larder to keep them warm. All three features are important as you start building your chicken coop. (C) [substeps] Coop space should be compatible with how large or small your chickens may be. Don't space your chickens too close to each other. (D) [substeps] Make sure there is a plentiful supply of food and water inside the chicken coop. Wood beams mounted horizontally can provide good perching space for chickens.

Ex Output:
D


Ex Input:
A pot of water boils on a stove. A person shows us a package of spaghetti then adds the spaghetti to the boiling water. the man <sep> (A) places the spaghetti into a pot of water. (B) stirs the spaghetti in the pot. (C) adds more spaghetti until the cooked spaghetti is finished. (D) boils spaghetti onto a plate and sets the plate aside.

Ex Output:
B


Ex Input:
. a man dressed in a black glittery uniform <sep> (A) is standing in a billiard room playing a pretend game and pretends he is drinking from a little cup made of silver balls. (B) is standing in the gym practicing dodge ball with a ball and a basketball pole. (C) demonstrates how to roll a silicone stone down a road in a tall building. (D) is standing in the middle of a basketball gym twirling a baton.

Ex Output:

D