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 Q]: Article: The Chinese invented paper in 105 A. D. They mixed the bark of a tree and rags with water, put a screen into the mixture, and lifted out a thin piece of wet paper. They dried the paper in the sun. The Chinese kept their secret of how to make paper until a war with Muslims in the ninth century. The art of papermaking soon spread throughout the Muslim world. The Mayan Indians in Central America and Pacific Islanders also discovered how to make paper, but their knowledge never spread to the rest of the world. For centuries, all paper was made by hand. Rags were the main material. Then a French scientist discovered that people could make paper from wood, too. Finally, in the eighteenth century. a Frenchman invented a machine to make paper from wood.
Question: Who discovered how to make paper?
Options: (A) The Chinese. (B) The Pacific Islanders. (C) The Mayan Indians. (D) All of the above.
[EX A]: D

[EX Q]: Article: It was late one evening. I can't remember what it was about, but my dad and I had a very big argument when my mom was away. We both said things we didn't mean, and in the end I said, "I'm leaving." And he said, "Good. The sooner, the better." I threw a few things in a suitcase and closed the door angrily behind me, not knowing where I was going. After walking aimlessly for about 20 minutes, I stopped at a local supermarket. Then my phone rang. It was my mom calling. She said, "Hey, Mary. Where are you? Dad is worried about you." "How can he worry about me? I've been away for nearly half an hour, but he didn't call," I said with annoyance . My anger returned and I remembered all the hateful things he'd shouted to me. "Listen, Mom. You can tell Dad that I'm fine. I'll call you tomorrow," I said and hung up. I walked around the store, trying to get my thoughts together. By the time I paid for my _ , it had been much later than I used to be out alone. When I left the supermarket, a large piece of white paper was in front of me. On the piece of white paper were these words: "Please come home! I miss you and I'm worried about you!" Then a car pulled up beside me. Hanging out of the window was my dad. Beside him, smiling gently, sat my mom. And that's when I started laughing. I laughed so hard that I cried. Despite my best efforts to run away from home, my father finally managed to track me down. I couldn't leave now, not with him sitting there with caring eyes.
Question: Hearing Mary decided to leave home, Mary's father was very _ .
Options: (A) worried (B) angry (C) nervous (D) surprised
[EX A]: B

[EX Q]: Article: English as a second language (ESL) websites for children can help build vocabulary, teach correct spelling and pronunciation of words, and assist with basic grammar such as understanding sentence structure, parts of speech, tenses, and singular and plural word forms. English learning websites for children include: * ESL Kid is an organized website that serves as a comprehensive directory of English as a second language resources for children, teachers, and parents. There are categories for different subjects, such as ABC games, dictionary, spelling, literature and music. Since this is just a directory, parents should help children explore the sites linked to it. * MES Games has several categories of interactive games. Some games are more suited to younger children and beginning learners, such as the vocabulary building games in which players must first listen to a spoken word and then identify the correct items. More advanced children will enjoy online sport games based on grammar concepts that go with multiple choice questions. * ESL Kids Lab has many resources for helping children learn English as a second language. These include free video English lessons categorized by grade level, ideas for games, and printable worksheets. However, the inferiority of this website is also obvious -- it contains lots of advertisements. * ESL Kid Stuff has a variety of resources, including a list of select online English learning games and song lyric sheets. Downloading worksheets and flashcards requires a yearly membership fee, however. * English Interactive lets children and beginning ESL students click on words to hear their pronunciation and build essential vocabulary skills. After viewing the words, students can try an interactive quiz. * English Vocabulary Games has a variety of interactive games designed to help ESL children build vocabulary.
Question: The best title for this passage would be _ .
Options: (A) Children Enjoy Learning English Online (B) Children Learn English Through Games (C) Welcome to MES Games (D) ESL Websites for Children
[EX A]:
D