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: [header] How to know if you have glaucoma [title] Schedule regular eye exams. [step] Open-angle glaucoma leads to the gradual deterioration of your vision over an extended period of time, usually years. Most people suffering from open-angle fail to notice symptoms until the glaucoma is very advanced and nerve damage has occurred. <sep> (A) [substeps] Glaucoma is usually attributed to a condition called retinopausal glaucoma. Doctors often refer patients with retinopausal glaucoma to psychotherapy or therapy. (B) The overall diagnosis is: glaucoma can present in two patterns: primary and secondary. Secondary glaucoma reverses almost any natural condition and the simplest way to identify glaucoma is to get three to four eye exams in a normal week. (C) [substeps] It is important to schedule eye exams every year, especially if you are over the age of 40 or have a family history or glaucoma. Open-angle is the most common type of glaucoma in the united states, affecting over 2 million people. (D) Checking your eye closely is often the first step to identifying the signs of open-angle glaucoma. [substeps] Schedule a yearly eye exam using a variety of tools.
Example Output: C

Example Input: A man is pushing a lawn mower through the grass. A child is standing next to him pushing a toy lawn mower. they <sep> (A) speed past a car in the street. (B) pass other kids on the lawn mower. (C) move up and down the lawn on the mower. (D) give each other a high five.
Example Output: D

Example Input: [header] How to make a towel turban [title] Mark out the towel. [step] Fold in half, and for ease we are going to use the existing finished edge (of course, you could use some bias binding if you wanted). Measure-on the folded side-23 cm (9 ") up and mark with chalk. <sep> (A) From this mark, measure 8 cm (3 ") down (ie, at 15 cm). Then go back to your 23 centimeter (9.1 in) mark and measure 8 cm (3 ") across (i.e. (B) Add 12/24 " extra fabric, patterned by a button or two, and this will become the wrapping paper. [title] Cut out whatever " swag " you're using. (C) Make sure you trim off all excess tape. Check out the previous step for how to cut your towel. (D) [title] Measure up from the first edge to get a straight edge. [step] Mark so the edge is perpendicular to your towel (with an s draw).
Example Output:
A