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 Q]: We see a man teaching others to sharpen a knife in a butcher shop. The man wets the sharpening stone. Two men in the back laugh at something. the instructor <sep> (A) shows us a basket of pennies. (B) checks the knives and uses the sharpened knife to sharpen a one. (C) uses a sharpening rod for the knife. (D) puts a paper in the sink.
[EX A]: C

[EX Q]: [header] How to dye your hair with coffee [title] Brew some coffee. [step] Brew about 1-2 cups (240-470 ml) of organic coffee. The coffee should be organic, because non-organic coffees usually have added chemicals and preservatives. <sep> (A) For best results, make your own coffee by just boiling water for at least 30 minutes before you dye. [substeps] It's important to pour the brewed coffee into a shaker and bring to a boil. (B) [title] Reserve the coffee, if you don't already. [step] Coffee typically comes with an anti-aging coffee stain, which means it defroshes much faster in the summer than it does in the winter. (C) It is important to serve the coffee as soon as possible to ensure that it takes at least 24 hours to brew. If the coffee is sitting in your refrigerator, turn it cold to speed up the process. (D) Be sure to use a dark roast coffee or espresso. This will help make sure your hair will darken with the coffee.
[EX A]: D

[EX Q]: [header] How to write a newspaper headline [title] Understand the key elements of a newspaper headline. [step] A good newspaper headline will be factually correct, connect to ordinary readers, attract attention using active words, and match the tone of the article. [substeps] Accuracy is very important when writing a newspaper headline, as you do not want to create an unintended meaning or confuse your reader. <sep> (A) It's critical that headlines match a published page or text. So do not simply copy and paste the journalist's name or a non-published article after a headline and e-mail the cover letter to the editor. (B) [title] Include a colon at the top of the page and then a colon after it. [step] The first colon will act as a prompt and the other colon will be used to write the rest of the article. (C) The headline should be at least three-quarters of the way down the entire body of the article. Rarely is a headline more important than the rest of the article. (D) Avoid exaggerating or embellishing the content in the article by using an overblown headline. Instead, aim to communicate clearly with your reader through a short, one to three word headline.
[EX A]:
D