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 Input:
Article: The first Ml choir rehearsal of the school year took place in the school hall. All the students joined together to sing. I watched as my elder sister and her grade came in and took their places next to us on the stage. Meanwhile, I could hear laughing. Some students were pointing at a girl standing next to my sister. I'd never seen this girl before. A girl whispered in my ear, " Did you know she's wearing diapers ?" After school that evening, I asked my sister about the girl I'd seen. She told me her name was Theresa and that she was a very nice girL ." Why were those kids being mean to her? I asked, "Because they're stupid," she said. One day, I was walking home from school when I heard voices behind me. "There's the little idiot's sister. Does your sister wet her pants too?" I walked a little faster and then I felt a atone hit me in the back. When I got home, I ran down to my sister's room. I pushed my way into her room, screaming at her. "Why do you have to be that giri's friend? I don't see anyone else being nice to her, " Janelle yelled back, Because she is a wonderful person and she is dying!" I will remember those words as long as I live. Theresa wet her pants because she had an illness, which was killing her. My sister was the only one nice enough to be her friend and stick up for her. A few months later, Hieresa passed away. I felt proud that Janelle was my sister. Throughout the years I watched her, and she always made friends with everyone. It didn't matter if they ware fat, thin, brilliant or not. She never left anyone feeling isolated or alone. It was she who changed me and taught me to never look at anyone in the same way again.
Question: Why did other students make fun of Theresa?
Options: (A) Because she was dying very soon. (B) Because she was not good at singing, (C) Because she behaved in an unusual way. (D) Because she was usually dressed poorly.

Ex Output:
C

Ex Input:
Article: New findings show that musical training affects the structure and function of different brain areas, how those areas communicate during the creation of music, and how the brain interprets and combines sensory information. The findings were presented at Neuroscience 2013, the annual meeting of the Society for Neuroscience and the world's largest source of emerging news about brain science and health. These views suggest potential new roles for musical training including training plasticity in the brain, offering an alternative tool in education, and treating a range of learning disabilities. Today's new findings show that long-term high level musical training has a broader effect. Researchers found that musicians have a better ability to combine sensory information from hearing, touch, and sight. The age at which musical training begins influenced brain structure and its function. Beginning training before the age of seven has the greatest effect. Even older adults who took music lessons as children but haven't actively played an instrument in decades have a faster brain response to a speech sound than those who never played an instrument, according to a study appearing November 6 in the Journal of Neuroscience. The finding suggests early musical training has a lasting, positive effect on how the brain deals with sound. "Playing a musical instrument is a multi-sensory and motive experience that creates emotions and movements--from finger tapping to dancing -- and engages pleasure and reward systems in the brain. It has the potential to affect brain function and structure when done over a long period of time," said Gottfried Schlaug, MD, PhD, of Harvard Medical School, press conference speaker, also an expert on music. "As today's findings show, musical training brings about new processes within the brain, at different stages of life, and with a range of effects on creativity, cognition , and learning," he added.
Question: Why does the author mention "Even older adults ... a speech sound." in Para. 3?
Options: (A) To suggest how new roles for musical training work. (B) To prove early musical training affects the function of the brain. (C) To explain how the brain interprets sensory information. (D) To show how the brain areas communicate in music training.

Ex Output:
B

Ex Input:
Article: The Lionfish Invasion! Lionfish are popular saltwater aquarium fish all over the world, especially in the United States. Nowadays, they also live in Atlantic waters off the East Coast of the United States. These lionfish are what scientists call an invasive species or an "alien invader." Local divers off the coast of North Carolina were not expecting to see what they found one day in August 2002--the beautiful lionfish, common to the warm waters of the western Pacific, but unknown of the Carolina coast. They provided the first solid evidence that lionfish were in the Atlantic. A year later, scientists documented 19 lionfish sightings at eight locations along the North Carolina continental shelf. Then, lionfish were observed off the coasts of Florida, Georgia, and South Carolina, and even as far north as Long Island, New York! Between 2000 and 2003, lionfish sightings were reported at 16 different shipwrecks and natural hard bottom locations. During a summer 2004 research expedition, NOAA(The National Oceanic and Atmospheric Administration) scientists collected 155 lionfish at 19 different locations off the North Carolina coast alone. The jump in numbers and distributions over such a short time strongly indicates that the lionfish is reproducing in the Atlantic Ocean. If this is true, it's the first time that a western Pacific fish has populated the U.S. Atlantic coast. These lionfish were likely released on purpose when people no longer wanted them! The swift and warm Gulf Stream, which transported the floating lionfish eggs from Florida northward, helped the lionfish's Atlantic journey. In Florida waters and along the continental shelf near the Gulf Stream the temperatures are very similar to the lionfish's native waters. However, from north Florida upward, the waters along the coastline are too cold in the winter for lionfish to survive. Scientists expect them to survive the winter only at water depths greater than 120ft because this is where the Gulf Stream has influence all year long. Very importantly, the types of predators and competitors present in the Atlantic are very different from the native range of the lionfish. Generally, the lionfish have not been found to endanger marine ecosystems because they were not likely to survive long.
Question: Scientists call the lionfish an "alien invader" because the lionfish _ .
Options: (A) have damaged the native species (B) are able to live in a new environment (C) came from one place and spread to another (D) will attack other species with their poisonous teeth

Ex Output:
C