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.

Example 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
Example Output: A

Example Input: Article: Most students hate their endless homework. The students from Class 2, Senior 2 of the High School Affiliated to Peking University certainly did so before they published their own collection of English novels at home. Their small book contains stories about a holy war, the happy life of a self-taught artist and the story of a laid-off worker who devoted his last breath to playing his beloved accordion . The book becomes an instant hit on campus. About 3,000 copies have been sold and the class is already working on the second volume. "We're up to our ears in homework. Exercises and exams make us out of breath. But to do something creative and full of imagination is such a great achievement," said Yu Xiaoxiao, 16. "I took the writing as an ordinary homework at the beginning, but after I finished the first part of my story, I could not help but let it flow," said Wang An, who wrote "Accordion". Inspired by "Lord of the Rings", Jiang Lu wrote his story about magic wins between angels from the light and the dark side. "The main message of the story was to look at the balance of the world. Both dark and light angels fight with love as their weapons. I want to tell people that selfish love might bring hate," Jiang said. "I was shocked by their work and felt so proud to be the editor of my students' book," said Nathaniel Timmermann, the oral English teacher at the school. Liu Xiuqin, an English teacher, started the project by asking students to write whatever was in their mind every week. "They have performed beyond expectation," Liu said. "They wrote interesting stories and their English has improved after they started to express their real minds." "We never imagined that our homework would be so popular and profitable . We sell the novels at five yuan, but many teachers pay more to encourage us," said Yuan Mengyao.
Question: After Wang An finished the first part of his story, he _ .
Options: (A) couldn't go on (B) had to put aside (C) just wanted to express it freely (D) lost it
Example Output: C

Example Input: Article: I was 230 pounds this spring and I decided to get down to a healthier 200.In a house full of food,including snacks bought for my 7yearold sons,I had a hard time cutting calories. Then I noticed my neighbors were having diet meals .I decided to do the same,knowing I would never be able to stick to a diet if I had to do the buying and cooking myself. I was looking for food that I could afford but I might take a diet more seriously if it hurt me in the wallet. After online searches,I decided to compare the offerings of four companies:Zone Manhattan,Chefs Diet,NuKitchen and eDiets. All four would send the meals to my door. Three send food daily,while eDiets sends a large package once a week. There were dozens of companies I could have chosen.Research suggests that the economic crisis has made diet programs less _ .Consumers prefer doityourself diets with foods bought from the supermarket. NuKitchen regards itself as the "personal chef".I ordered the fiveday plan ($230.53) and the taste was disappointing. I neither lost nor gained weight on the food. eDiets promises "healthy,delicious meals sent to your door".I ordered five breakfasts,five lunches and five dinners. My total cost was $119.70,or less than $25 a day. Overall,the food from eDiets was better than that from NuKitchen. Chefs Diet charged $380.99 for seven days,making it the most expensive of the four services.I never tasted anything terrible,but I never tasted anything that made me want to renew for a second week. Zone Manhattan charged $349.80,with tax,for a week's supply of food,or about $50 a day.I liked the food so much that I lost six pounds in the first four days on the diet.
Question: When the author began to have diet meals,she _ .
Options: (A) was 200 pounds (B) didn't have any children (C) worked as a cook in a company offering diet meals (D) didn't believe she could stick to a diet if she had to cook herself
Example Output:
D