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 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.
D

Article: A scientist working at her lab bench and a six-old baby playing with his food might seem to have little in common.After all,the scientist is engaged in serious research to uncover the very nature of the physical world,and the baby is,well, just playing...right?Perhaps,but some developmental psychologists have argued that this"play"is more like a scientific investigation than one might think. Take a closer look at the baby playing at the table.Each time the bowl of rice is pushed over the table edge,it falls in the ground---and, in the process, it belongs out important evidence about how physical objects interact ; bowls of rice do not flood in mid-sit, but require support to remain stable. It is likely that babies are not born knowing the basic fact of the universe; nor are they ever clearly taught it. Instead, babies may form an understanding of object support through repeated experiments and then build on this knowledge to learn even more about how objects interact. Though their ranges and tools differ, the baby's investigation and the scientist's experiment appear to share the same aim(to learn about the natural world ), overall approach (gathering direct evidence from the world), and logic (are my observations what I expected?). Some psychologists suggest that young children learn about more than just the physical world in this way---that they investigate human psychology and the rules of language using similar means. For example, it may only be through repeated experiments, evidence gathering, and finally overturning a theory, that a baby will come to accept the idea that other people can have different views and desires from what he or she has, for example, unlike the child , Mommy actually doesn't like Dove chocolate. Viewing childhood development as a scientific investigation throws on how children learn ,but it also offers an inspiring look at science and scientists. Why do young children and scientists seem to be so much alike? Psychologists have suggested that science as an effort ---the desire to explore, explain, and understand our world---is simply something that comes from our babyhood. Perhaps evolution provided human babies with curiosity and a natural drive to explain their worlds, and adult scientists simply make use of the same drive that served them as children. The same cognitive systems that make young children feel good about feel good about figuring something out may have been adopted by adult scientists. As some psychologists put it, "It is not that children are little scientists but that scientists are big children."
Question: According to some developmental psychologists,
Options: (A) a baby's play is nothing more than a game. (B) scientific research into babies; games is possible (C) the nature of babies' play has been thoroughly investigated (D) a baby's play is somehow similar to a scientist's experiment
D

Article: On an August afternoon last year, Pamela Rivers, 40, and her friend Rita Graham, 38, were stopped at a red light on Cobb's Creek Parkway in South Philadelphia when a white SUV traveling in the opposite direction turned across traffic in front of them. It then jumped the curb and rushed through a grassy expanse before plunging down an embankment toward Cobb's Creek. Pamela quickly pulled over, jumped out of her car, and dialed 911. Kenny Gibson, 23, and his friend Taron Green, 25, were driving home from a job when Rita flagged them down. Kenny stopped, and the men got out of the car and looked over the cliff. The SUV had landed upside down in five feet of water. A woman's leg could be seen swinging out the driver's side window. "I have a fear of water," Kenny said now. "I almost drowned when I was nine." Even so, he and Taron hurried down the 50-foot embankment into the muddy water. "I couldn't just leave her," he adds. The men waded out to the car and saw that the woman, Cheryl Allison, 61, was partially in water. Kenny tried unsuccessfully to open the door. Then he broke the window. But when he reached in to pull out Cheryl, he found she was trapped by the seat belt. "Run back to the truck and grab a box cutter ," Kenny yelled to Taron. Meanwhile, Kenny tried in vain to push the car onto its side to create an air pocket for Cheryl. That's when mechanic Marcell Porter approached the site. "I flipped into rescue mode," he said. When Taron returned, Kenny cut through the seat belt with the box cutter. He and Marcell tried to pull Cheryl out, but she wouldn't come out. Marcell broke the rear window with a rock, hoping to rescue her from the back. Then he saw that she was still strapped in by her shoulder belt. Marcell reached for the box cutter and cut the remaining strap in two. Kenny leaned in, grabbed Cheryl by the waist, and pulled her out feet first. Marcell grasped Cheryl's legs, and they managed to drag her lifeless body onto a rock. "Give her CPR!" Pamela yelled down to them. But the two men had no idea what to do. "Put your mouth on her mouth and breathe," she shouted to Marcell. And to Kenny, "Pump her chest!" "We tried three times," said Marcell. Finally, Cheryl brought up water and started moving her fingers. The men rolled her over onto her stomach to let out more water. Soon an ambulance arrived and transported Cheryl to the hospital, where doctors treated her. They never discovered what caused her to pass out, but she assumes it had something to do with the burning summer heat. Over the next few days, they took turns visiting Cheryl in the hospital, where they shared hugs and tears. "We couldn't believe she was all right," said Pamela. "It's just amazing that these people came together," said Cheryl. She stays in touch with her "angels" via frequent phone calls. "They are really beautiful people," she said.
Question: Which telephone number do Chinese dial in the case like that where Pamela in the passage dialed "911"?
Options: (A) 121. (B) 120. (C) 114. (D) 12315.
B