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:
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.

Ex Output:
B

Ex Input:
[header] How to catch a snake [title] Coax the snake into a net. [step] You can catch a snake using a long slender object like a badminton or tennis racket, or a long broom handle attached to a mosquito net. When you see the snake, you'll want to get quickly to the scene. <sep> (A) Don't approach the snake until it's calm. The longer you get up close to it, the more likely it is that you'll scare it away. (B) Once the snake has stretched out and you are able to grab it, pull it gently toward your body or into a net and secure it with a piece of string. [substeps] Be careful to use the wire if you want to keep a strong grip on the snake and reduce the likelihood of biting the animal. (C) Place your net in front the snake's head and coax the snake into the net. The long slender object you attach to the net should be long enough to keep your body a safe distance from the snake, while attempting to net it. (D) Take the first step before catching the snake so it doesn't get too close. Move towards the snake, and hold the net in front of you.

Ex Output:
C

Ex Input:
[header] How to measure dogs for coats [title] Gather your supplies. [step] Since you'll be measuring the dog's girth and length, you'll need a measuring tape, pencil, and paper. It may also help to have someone assist you in holding the dog steady while you take the measurements. <sep> (A) [title] Mark the distance between the shoulder blades and neck. [step] The neck measurement starts with the shoulder blades and ends with the shoulders. (B) [substeps] Have the person assist you with wrapping both the measuring tape and the paper around the pup so you have two devices for measuring. If the dog is especially heavy, plan on using a backpack or briefcase to support the dog. (C) [substeps] For a dog with shorter coats and fur, going with an adult can be a great idea, as you can have someone hold the dog on one arm while you make these measurements. For a more experienced poodle, either have a girl or a boy hold the dog while you work out. (D) [substeps] Have plenty of treats available that you can use to reward your dog and encourage him to hold still. [title] Locate where to measure your dog's girth.

Ex Output:
D