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: Studying abroad will shape you in various ways. You will learn things you never would have if you had stayed home. When you are young and unattached, you should travel. Besides, you just might save a large sum of money. College is expensive in the United States. It's cheap or free in other countries even for foreigners, so why not get out of here and come back smarter? More and more American students are currently studying at German colleges. That number has increased 20% over the last three years. Living costs are about $7,000 a year, which is even lower than in other European countries. Germany encourages international students. They create a multicultural landscape that benefits German students as well. According to a new report, Germany is home to six of the world's 100 best universities. These schools offer around 900 degrees completely in English and many German students speak the language. You could be part of Finland's excellent education system. The Finns charge no tuition and offer a number of courses purely in English. They would be happy for you to add flavor to their school scene. Cost of living there is high. Be prepared for frosty winters that far north, but you will get that sweet midnight sun in the summer. Many other European nations offer cheap or free college for foreign students, but if South America is more your thing, try Brazil. Most of the education will take place in Portuguese, so if that is in your plan you can study near beautiful beaches and jungles. The University of Sao Paulo and State University of Campinas are both highly ranked internationally. Your money will go a long way there, too. Many of the lessons you will learn will be outside the classroom. Living on the economy in a foreign country will keep you on your toes. You will learn new customs, how to bargain, stay safe, budget and become more flexible with people. There is no better way to learn a language than by immersing yourself in it. At first, it will be the toughest thing you have ever done. Eventually, it will become second nature.
Question: German universities are popular among US students mainly because _ .
Options: (A) they offer a multicultural landscape (B) they belong to the world's best ones (C) the cost of living there is reasonable (D) the students can get their degrees easily
[EX A]: A

[EX Q]: Article: I have two sons. They are as different as night and day. My youngest is sweet, loveable, easy-going, and finds joy in everything. My oldest we've nicknamed the "Evil Genius" is ambitious, self-confident, and suffers no fools. Whenever we mentioned Santa my husband and I were rewarded with major eye rolling and deep sighs from my oldest. At first we both tried to ignore it. We both knew that our eldest had figured out the big secret. But I'd be damned if he was going to ruin it for his six-year-old brother who had plenty of Santa-loving years ahead of him. I looked at my husband in the eye and said, "I'll handle this." to which he responded "Okay just be careful because I'm not sure he knows - he might just be acting like it." But I knew. And I had it in my mind that he was about to break his younger brothers spirit and break the news to him. I was afraid he was going to take the Christmas spirit away from my sweet innocent youngest and stamp all over it. I had to protect him. I needed to control this now before it got out of control. I rushed into the play room where my oldest was playing alone. I looked him dead in the eyes and said: "Well you know Santa isn't real, right?" And as I stared at my eight-year-old son for what seemed like a long time of silence, his eyes started to fill with tears. And a tear dropped down his cheek when he screamed out, "He's not?" "Um well it's not that he's not real (shut up you idiot - stop saying he's not real), but he doesn't really make and deliver all the toys. Dad and I get some of them for you. So he's real. He's just got a little help from us." _ . He just sat there looking at me with an expression of doubt. You know when you make a terrible mistake but you can't stop yourself from making it worse? That was me because I just had to know. I had to know why he had seemed to be over Santa. So I asked him why he rolled his eyes and sighed every time his father and I mentioned Santa. To which he replied that kids at school had been saying Santa wasn't real but that he still thought he was.
Question: What's the best title for the passage?
Options: (A) Two different sons (B) Santa secret given away (C) Protecting one, ruining the other (D) Making a mistake worse
[EX A]: C

[EX Q]: Article: We recently read a report on China's environmental problems, based on reports from Singapore's Straits Times. There was one statistic that shocked us. Environmental experts claim that without some great change, pollution might, within five years, make the Yangtze River just about unsuitable for all forms of life to live in. The baiji, or the Yangtze River dolphin, was only the latest victim. According to the first report, in the 1980s there were 126 forms of life in the river, and by 2002, that figure was already down to 52. Just how bad is the situation? The Yangtze River flows by 186 cities on its way from Qinghai to Shanghai, and in the process picks up 40% of China's polluted waste water. According to another report, in 2006, China produced a total of 53.7 billion tons of waste water. But that's not the worst news. By 2030, China might possibly use up between 89-100% of its sources of drinking water. All of this begs a deeper question: What kind of water are they using when they pump 10 kilos of water into pigs headed for the slaughterhouse ? This is an important question because if its waste water is not fit for human to drink, there's a chance that some of whatever was in that water was in the pork you had for lunch today. And if the water is safe to drink, that's a waste of perfectly good water. Another report we read, related to the Taihu algae blooming that has left 3 million people in the Wuxi area without drinking water, claims(quite believably) that Taihu's environmental problems will never end until all the factories along the lake close down. The algae bloom is so bad there that lots of people have to take the algae out of the lake all day long instead of fishing.
Question: Which of the following statements is NOT true about the Yangtze River according to the passage?
Options: (A) It goes by 186 cities on its way from the source to the sea. (B) Lots of waste water in the country is poured into the river. (C) The baiji in the river is now in danger of extinction. (D) We can hardly see any forms of life in the river now.
[EX A]:
D