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". 

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.
C

[header] How to travel abroad [title] Do your research. [step] You need to research where you are going, the flight times and prices for airlines, and which documents you need to take with you. Plan out your itinerary carefully. <sep> (A) Some cities, like london or paris, really need a week to see what they have to offer. Travel times also need to be taken into consideration. (B) For example, visit a couple of websites of airlines to see what type of itinerary they offer. Pay attention to the price, name, phone number and/or mailing address of each airline. (C) This will help ensure that all of your research enables you to see where you want to go. [substeps] Do research on an airline's website, and see what seat guides they offer on planes and what websites they provide online. (D) [title] Decide whether you will be flying from 1 area or from another. [step] International flights should likely be just a teaser.
A

A man and a boy scout talk in a kitchen, then the boy scout shows an electric trimmer, a machete and a big knife, and the man shows a rod and a small knife. Then, the boy shows his hand bleeding, after the man wraps the bleeding hand. the adult <sep> (A) shows a larger knife with a knob, and the boy and the boy talk inside a bathroom. (B) excitedly is holding the rod, cut puatre on a green potato on the table and put the potato on the sieve. (C) trimmer is the only tool for sharpening knives. (D) shows to the boy scout to trim a wood rod with a knife who again cut a finger, and the man wraps the finger.

D