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: 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
D

Article: As we neared the last days of my mom's life, I wanted to understand what she was feeling and seeing. The day before she took her last breath I decided to ask her. First I wanted to make sure she could comprehend what I was saying. I told her I loved her, and she raised her eyebrows in acknowledgment. Then I shared a funny story about a conversation my sister and I had. The corners of her mouth turned up in a smile. I could tell that she was taking in every word. And then I went for it. "Mom, can I ask you a serious question?" She turned her head and opened her eyes fully. I could tell she wanted to grasp every word that came out of my mouth. "Mom, do you see any of our dead relatives in the room? Do you see your dad?" she shook her head. Do you see your mom?" She shook her head again. "Do you see dad?" Her response was quite different this time. She began nodding her head. "Is he here in this room right now?" She nodded. "Can he see me?" She nodded again. Then she tried to communicate with words, but she couldn't get the words out. The next morning she died peacefully.. A few weeks ago, I was wondering why I haven't had many dreams of my mom since she died. That night I had one of the clearest dreams I've had for a long time. Mom was dressed beautifully. She stared at me with a huge smile. Her eyes were bright and full of life. She was happier than I had seen her in years. And she was younger. We didn't exchange any words, but it was clear that she was happy and free. I woke up with joy in my heart.
Question: What was the author's mother like on the last day before her death?
Options: (A) She had no sense of hearing at all. (B) She couldn't move except her eyes. (C) She could still speak in an unclear voice. (D) She could communicate with her body language.
D

Article: When the Berlin Wall came down in 1989, Leonard Bernstein gave a concert in Berlin, including Beethoven's Ode to Joy, with the word "Joy" changed to "Freedom" in the lyrics sung.The orchestra were drawn from both East and West Germany, as well as the United Kingdom, France, the Soviet Union, and the United States. Freedom was in the air and it was not just for people. The wall between East and West Germany had also kept a large population of wild pigs within the eastern forests of Brandenburg.The wall's falling down made it easier for the big pigs--a very big one can weigh over 300 pounds--to leave the woodlands and walk into the town. Warm winters and easy access to food have helped the population increase. Now about 10,000 wild pigs walk around Berlin. The nature of the beast has added to the boom ."The pigs are intelligent," says Marc Franusch, a spokesman for the Berlin forestry department. "They learn to use the neighborhoods.They get used to people, dogs, and traffic." The wild pigs tend to travel in small groups and have been found searching rubbish and gardens, feeding their piglets in the shadow of parked cars, and crossing busy roads.On average, the animals are involved in one traffic accident every day. And despite the fact that it's illegal, some Berliners have been known to give the pigs food. Though wild pigs are protected under German law, the city's forestry department is permitted to kill 2,000 of the creatures every year, targeting mostly young adult animals in forests surrounding Berlin. Pigs within city limits are only shot if they make an immediate threat.No humans have yet been seriously wounded by them, but local dogs have been the victims of their tusks. "The forestry department is not aiming to get rid of the pigs," explains Franusch, "but we do have to reduce dangerous situations."
Question: The following factors contribute to the boom of wild pigs EXCEPT _ .
Options: (A) the Berlin Wall (B) adequate food (C) their own nature (D) warm winter
A