In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Article: The Great Barn Adventure One morning when I was 11, I explored the town's abandoned round grain barn . I found a chained sliding door that was wide enough for me to pass through. Inside, there was a heavy smell of dead mice in the dark. After my eyes adjusted, I noticed a shaft that rose all the way to the top of the barn. On one side was a one-man elevator with a long rope and roller. I stepped onto the platform and gave the rope a drag and the elevator began sliding up the shaft, but stopped halfway. After a brief panic attack, I noticed holes in the wall at regular intervals, forming a ladder. For reasons known only to an 11-year-old, I decided it would be better to go up than down. So, with shaking hands, I began climbing the wall. After what seemed like forever, I reached the top of the shaft. I stood up, dusted myself off and found absolutely nothing of interest. It was just an empty room with a ladder leading up to the roof. I climbed all the way up here for this? Then I noticed a fire extinguisher ,which I'd always wanted to shoot off. So this was the chance of a lifetime. I tried it, and, much to my surprise, the thing worked! It shot out a thick cloud of powder that instantly filled the room. I couldn't breathe. I was going to choke to death, and they'd probably never even find my body. Luckily, I remembered the ladder to the roof. I climbed up, popped the straw roof and saw a bright blue sky. I suddenly realized the dust and powder pouring out of the top could draw attention. So when the dust had settled, I climbed down and slipped out of the chained door. I'm not sure if I was more excited about being alive or about not being caught, but I ran all the way back home.
Question: When the author got inside the barn, he _ .
Options: (A) noticed a man on the elevator (B) opened the chained sliding door (C) saw many dead mice in the dark (D) found a shaft leading to the top
D

Article: *Basic Study Manual Hardcover: $ 37.50 Future success depends on the ability to learn. Here are the answers to the questions most often asked by parents, teachers, business trainers and by students themselves. Read this book and learn: * What the three barriers to study are - and what to do about them * What to do if you get tired of a subject you are studying * Twenty-six simple drills to help you learn how to study easily, rapidly and with full understanding * Buy and read the Basic Study Manual and use it to dramatically improve your ability to study. *Study Skills for Life Hardcover: $31.99 L. Ron Hubbard's study technology for teenagers opens the door to their future success by giving them the ability to study and learn. Fully illustrated for easy comprehension. * Learning How to Learn Hardcover: $24.99 The basics of effective study for 8-to 12-year olds, fully illustrated. Children who read and apply the materials in this book regain their liking for study and their ability to apply this knowledge in life. Get this book for a child you want to see win at his studies! * How to Use a Dictionary Picture Book for Children Hardcover: $34.90 In spite of billions of dollars spent on "educational research," children are not taught the most basic skills of learning, even the most basic of these: how to use a dictionary. In fact, a search of educational books for children found not one that told them how to use a dictionary -or that one should. Written for children 8 to 12-year old, this fully illustrated book will teach your child: * How to find words in a dictionary * The different ways that words are used * What the different marks and symbols that are used in a dictionary mean * How to use a dictionary to correctly pronounce words Includes a section for parents and teachers showing you how to use this book with children. Buy this book and give it to your children to unlock their education. What's more, you'll just pay 50% for it before May 1, 2008.
Question: According to the advertisements, the four books are all intended for _ .
Options: (A) teachers (B) adults (C) children (D) women
C

Article: There are three different kinds of friends in our life. I classify them according to how well I know them and how well they know me. The first type of friend is just an acquaintance . This means that you only know their names. You might not even remember what they look like if you go away for a short vacation. You don't miss them when they are elsewhere. It is also this type of friend who gives you the most amount of aggravation . Since most of the time you are placed in a position where you have to act friendly, you would not normally tell an acquaintance when he or she is doing something that makes you feel angry, such as tapping the fingers on a table or shouting loudly. I call them "pest friends".www.ks5u.com The second kind of friend is a "guest friend". They are just social partners. You meet them at a certain location and at the end of the meeting you go your separate way and they go theirs. You don't talk too often with this sort of friend, and you don't share each other's secrets. Lastly, we have "best friends". This sort of friend is there when you need them. They know you as a person and they are there through thick and thin. Best friends are the ones that you can lean and depend on no matter what happens. If you need a listening ear, they will be the one to lend support. Friends come in all different shapes and sizes. Every friend has an impact on our life.
Question: What is this passage mainly about?
Options: (A) What a true friend is like. (B) Three kinds of friends in our life. (C) The role that friends play in our life. (D) Why there are different kinds of friends.
B