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.

Ex Input:
Article: studying 20 minutes a day for 20 days. You'll start with the basics and move on to more complex reading comprehension and critical thinking strategies. Please note that although each chapter can be an effective skill builder on its own, it is important that you proceed through this book in order, from Lesson I through Lesson 20. Each lesson builds on skills and ideas discussed in the previous chapters. As you move through this book and your reading skills develop, the passages you read will increase both in length and in complexity. The book begins with a pretest, which will allow you to see how well you can answer various kinds of reading comprehension questions now, as you begin. When you finish the book, take the posttest to see how much you've improved. The text is divided into four sections, each focusing on a different group of related reading and thinking strategies. These strategies will be outlined at the beginning of each section and then reviewed in a special "putting it all together" final lesson. Each lesson provides several exercises that allow you to practice the skills you learn. To ensure you're on the right track, each lesson also provides answers and explanations 'for all of the practice questions. Additionally, you will find practical suggestions in each chapter for how to continue practicing these skills in your daily life. The most important thing you can do to improve your reading skills is to become an active reader. The following guidelines and suggestions outlined will familiarize you with active reading techniques. Use these techniques as much as possible as you work your way through the lessons in this book.
Question: According to the passage, the pretest aims to
Options: (A) tell you where your starting level is (B) arouse your interest in using the book (C) illustrate the structure of the text (D) introduce the test-taking techniques

Ex Output:
A

Ex Input:
Article: When school was out, I hurried to find my sister and get out of the schoolyard before seeing anybody in my class. But Barbara and her friends had beaten us to the playground entrance and they seemed to be waiting for us. Barbara said, "So now you' re in the A class. " She sounded impressed. "What' s the A class? "I asked. Everybody made superior yet faintly envious giggling sounds. "Well, why did you think the teacher moved you to the front of the room, Dopey? Didn' t you know you were in the C class before, way in the back of the room? " Of course I hadn' t known. The Wenatchee fifth grade was bigger than my whole school which had been in North Dakota, and the idea of subdivisions within a grade had never occurred to me. The subdividing for the first marking period had been done before I came to the school, and I had never, in the six weeks I' d been there, talked to anyone long enough to find out about the A, B, and C classes. I still could not understand why that had made such a difference to Barbara and her friends. I didn' t yet know that it was shameful and dirty to be a transient laborer and ridiculous to be from North Dakota. I thought living in a tent was more fun than living in a house. I didn' t know that we were gypsies, really (how that thought would have excited me then! ), and that we were regarded with the suspicion felt by those who plant toward those who do not plant. It didn' t occur to me that we were all looked upon as one more of the untrustworthy natural phenomena, drifting here and there like mists or winds, I didn' t know that I was the only child who had camped on the Baumann' s land ever to get out of the C class. I didn' t know that school administrators and civic leaders held conferences to talk about the problem of transient laborers. I only knew that for two happy days I walked to school with Barbara and her friends, played hopscotch and jumped rope with them at class intervals, and was even invited into the house for some ginger ale--a strange drink I had never tasted before.
Question: The tone of this passage as a whole is _ .
Options: (A) impersonal (B) enthusiastic (C) reflective (D) defensive

Ex Output:
A

Ex Input:
Article: "One thing I enjoy about my job is that I can work on something that is actually active," says Game McGimsey, an American volcanologist . Part of his job includes keeping an eye on Alaska's many active volcanoes and giving people a heads-up when a volcano might erupt . Like most jobs in the science, volcanology requires a lot of education. McGimsey received an undergraduate degree in geology at the University of North Carolina, then landed an internship with a geologist at the USGS whose work field was about volcanoes. After earning a graduate degree at the University of Colorado, McGimsey accepted a job with the USGS and has been with the Alaska Volcano Observatory for 25 years. Volcanoes can influence the world in ways we might not think about. For example, on Dec.15 1989, a 747 jetliner (a large airplane) flew through a thick ash cloud produced by Mount Redoubt, an Alaskan volcano that hadn't erupted in 25 years. The ash caused all four engines to die, and the plane's electronics went dead. "The plane was within several thousand feet of flying into the mountains below when the pilots got a couple of engines restarted and landed safely in Anchorage," McGimsey says. It cost nearly $80 million to repair the damage to the plane. Such situations show just how dangerous volcanoes can be. However, volcanologists know the risks and are prepared to protect themselves. McGimsey admits, "There is certainly a higher danger level in volcanology than some other jobs. We understand how serious the danger is, and we don't like taking unnecessary chances. We avoid getting too close to an erupting volcano, because it is not worth injury or death simply to get a rock or a photograph."
Question: Before working for the USGS, McGimsey _ .
Options: (A) had been a pilot for 25 years (B) knew nothing about the organization (C) had taught at the University of North Colorado (D) had studied at the University of Colorado

Ex Output:
D