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 taco dip [title] Beat together the cream cheese, sour cream, and taco seasoning. [step] Place the softened cream cheese, sour cream, and taco seasoning into a large mixing bowl. Using an electric mixer set to medium-high speed, beat the three ingredients together for 1 to 2 minutes, or until evenly and smoothly combined. <sep> (A) [substeps] If you prefer a slightly curvier dip, gradually add more salsa in the amount indicated on the packaging. If you prefer a firmer dip, add more salsa, or stop at about the halfway point of the dough instead of adding more. (B) [substeps] For a slightly curative dip, beat the cream cheese and sour cream together for 1 to 2 minutes. [title] Cook the onion, lemon juice, pepper, and soy sauce in the mixture. (C) [substeps] Note that the cream cheese must be softened to room temperature before you begin. The mixture will likely retain more lumps if you use cold cream cheese. (D) Beat the three more times to make the ingredients clear. [substeps] Processing the ingredients separately will make them more evenly combined and will give you a smoother, more instant taco dip.
Example Output:
C