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.

[Q]: Article: Nature is full of color, from rainbows and roses to butterfly wings and peacock tails. Even the fruits and vegetables you eat have different colors: blue blueberries, red strawberries, green broccoli, and orange carrots. Plant and animals often use color to attract attention. The substances responsible for these colors belong to a class of chemical called antioxidants . Plants make antioxidant to protect themselves from the sun's ultraviolet(UV) light. Ultraviolet light causes chemicals called free radicals to form within plant cells. They can destroy parts of plant. Free radicals also have damaging effects on human beings. Some of these effects like wrinkled skin can be seen. The damage is caused by the free radicals attacking cells in our bodies. Certain cancers and heart disease are linked to free radicals. Our bodies have natural defences for fighting off free radicals. While we are young, our defences are pretty strong. However, they get weaker as we get older. The body's built-in defences can only go so far without extra help. The key to fighting free radicals with fruits and vegetables is to mix and match colors. It's like sunscreen for the inside of your body. Go for a range of very bright colors. Colorful foods contain hundreds of healthy chemicals not found anywhere else. Research into how chemicals in blueberries affect the brain's function in rats suggests that these chemicals may help our own brains work more efficiently. Don't just blame the sun. Ultraviolet light isn't the only source of free radicals. If you breathe polluted air such as smog, automobile exhaust , or wasted gas from a factory, you take in chemicals that also cause such damage. And, the body itself produces free radicals as it processes food. 
 Question: Which of the following not true? 
 Options: (A) Antioxidants are responsible for plant colors (B) Plants use color to attract attention (C) Antioxidants can protect plants from UV light (D) Antioxidants help free radicals to attack plants
[A]: D


[Q]: Article: The arrival of autumn starts  the traditional fall festivals which aim to welcome the new season. Here's a guide to several fall festivals that are held in the Roanoke region each year. Boones Mill Apple Festival It is held the third Saturday in September every year.The festival is hosted by the Boones Mill Lions Club and attracts  people from all over Virginia. The most important things of the festival include art shows, fried apple pies,and a high school band. There are lots of food,crafts,music,and games for every age group. Admission   is free. For more information, call 540-334-5975. Blue Ridge Folklife Festival Ferrum College hosts the festival as an October celebration of the harvest every year.The festival shows some farm fresh produce and the farming practices of the last year.Children can enjoy playing many of the games.The festival begins at 10:00 a.m.Admission is $ 10 for adults and $ 5 for children and senior citizens.You can call 540-365-4412 or visit the website. Mountain Magic Fall Festival The town of Buchanan on the outskirts of Roanoke is the place where the Mountain Magic Fall Festival is held.The festival is held in October and has two to four groups of crafters,antique dealers,and food vendors.Live Bluegrass music plays all day and children enjoy visiting the pet zoo. The auto show and farmers' market are also big attractions. Call 540-357-2509 for more information. Vinton Fall Festival A 5K walk, a truck ride, and a civil war group are just some of the exciting parts of the Vinton Fall Festival.The festival is held in October under the golden shade trees in downtown Vinton.Other attractions include hayrides,agriculture judging,  health  education,and  children's activities.Phone: 540-343-1364. 
 Question: If a boy and his parents go to Blue Ridge Folklife Festival,they should pay  _  . 
 Options: (A) $5 (B) $10 (C) $15 (D) $25
[A]: D


[Q]: Article: Dr. Glenn Tisman, a cancer specialist, knew his young neighbor, Ray Bateman, had an unusual mind. But he had no idea at the time that 12 - year - old Ray had the ability to become his partner in cancer research. Ray's parents remembered that at age four, Ray surprised them by fixing a broken vacuum cleaner . When he was ten, he speedily constructed the family color television from a kit. Later, he succeeded in assembling  a complex stereo system after two experts had failed to do the job. When Ray was ten, he convinced his parents to buy him a computer. In a short time, Ray was able to do amazing things with the computer. Ray shared his enthusiasm for computers with Dr. Tisman, who used a computer for his research. The two discussed computers and medicine frequently. Amazingly, Ray understood the biology and chemistry related to Dr. Tisman's medical research without any previous instruction. Ray then worked with Dr. Tisman after school. He helped conduct research with the equipment and kept it in working order. The purpose of the research was to test the effectiveness of mixing an old cancer drug with certain vitamins. Ray analyzed patient test results by computer, while Dr. Tisman handled all patient contact. Together, they came up with solid research that helped advance cancer treatment. In 1988, 14 - year - old Ray went with Dr. Tisman to a meeting of the American Federation for Clinical Research(AFCR), where Ray presented their initial research findings. Using terminology  beyond the grasp of most kids his age, Ray told the scientists how the new drug mixture caused fewer and milder side effects for cancer patients. A year later, Ray returned to the meeting to update the findings of his and Dr. Tisman's research. By then, he had become well - known for his devotion to finding cures for sick patients. Stories about him appeared in hundred of newspapers around the world. He appeared on television newscasts and talk shows. Ray continued to spend most free hours working with Dr. Tisman. The two began studying the effects of vitamins on babies inside the womb . However, Ray's main interest remained cancer treatment, and he continues his research today. 
 Question: According to the passage, Ray   _   . 
 Options: (A) is a boy of many gifts (B) is very helpful to his parents (C) learned fast under Dr. Tisman's instruction (D) stopped working with Dr. Tisman after his success
[A]:
A


