instruction:
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". 
question:
A large group of people are seen moving around on exercise bikes. the group <sep> (A) kicks around one another while others watch on the side. (B) move together while the camera pans around. (C) moves around the road and jumps on and off the exercise bikes. (D) rides around, bumping into one another.
answer:
B


question:
[header] How to sell dvds on amazon [title] Register for an amazon seller account. [step] Go to amazon's seller central site to sign up for a third party seller account. Fill out the registration form with your name, email address, and unique login password. <sep> (A) Once your account has been activated, you'll be able to sell your used items on amazon. [substeps] You may also be asked to provide some basic financial information, such as your debit card or bank account number. (B) Agree to the terms and conditions of the seller account and click on " register " at the bottom right of the page. You will receive your cd rental rights next to your name. (C) [title] Copy your dvd, videos, or files onto your home screen using the same link on the seller main page. [step] Make sure this link is easy to write and that your dvd is in a separate folder for storage purposes. (D) Most sellers will require you to provide a proof of registration and identification number before you can register. [substeps] If you don't yet have an amazon account, you can register this online or in person.
answer:
A


question:
[header] How to write best selling children's books [title] Pick an age range. [step] You do not want to walk up to an agent or publisher with a vague idea of your target audience. Agents and editors don't take well to book's that are " for all ages. <sep> (A) " if you want to write a bestseller, it's important to have a niche age range in mind. [substeps] Things like picture books and stories with only a few words are usually for ages 2 to 6. (B) " it can be stressful to work with adults that are not yet ready for you book. [substeps] Part of the reason children's books are so popular is that they emphasize mental, emotional, and physical maturity. (C) " fifteen or more year olds will quickly start to disseminate the information to an unqualified adult who no longer has a preference for fan literature. Reading up on the latest minds before you book can help to come to an understanding of what they want from a young audience before you begin reading. (D) " instead, pick an age range to be as engaging as possible. Ask yourself why the publisher of the book ultimately wants that book.
answer:

A