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: Let's pretend we're sailing down the Rhine River on a pleasure boat. The Rhine is one of the main waterways of Germany, and the river traffic is heavy. It's interesting to watch the many boats going up and down the river. But the river traffic is not nearly so interesting as the beautiful scenery along the banks and hillsides. The boat is passing many old castles. We can see people working in the vineyards on the hillsides. There are vineyards as far as the eye can see. Wine from the Rhine Valley is famous all over the world. Suddenly our boat slows down and begins to turn a little. We are coming to a sharp bend in the river. On our right we can see a rocky cliff over 400 feet high. At first it looks quite ordinary, but there is nothing ordinary about it. There are many stories, poems, and songs about the cliff. We are looking at the Lorelei. Then someone on the boat begins to sing in German, the song of the Lorelei. It is a song about a beautiful siren who has lured many sailors to their deaths. The siren is supposed to sit on the rock combing her long golden hair and singing. The sailors who hear her forget to steer , and the current of river hurls their boats on the rocks and dashes them to pieces. Soon other people on the boat begin to sing. The beautiful song adds to special magic to the moment, and you begin to realize why so many people have made this trip down the Rhine to see the rock of the Lorelei.
Question: The most interesting thing to those who are sailing down the Rhine River on a pleasure boat is _ .
Options: (A) to watch many boats going up and down the river (B) to see the beautiful scene along the banks and hillsides (C) to hear a song about beautiful siren (D) to see a beautiful siren combing her golden hair
[A]: B

[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
[A]: A

[Q]: Article: Most teenagers in the United States spend their time trying to make time for school,family and friends.But some choose bigger goals. At age 15,Winter Vinecki has already had more successes than most people have in their lifetime."I recently completed a marathon on all seven continents and became the youngest person in the world to do so.And I was really doing this for my dad." Doctors discovered that Winter's father had a rare and deadly form of prostate cancer when she was nine years old.Then he died 10 months later."When he was first diagnosed with prostate cancer I immediately knew I had to do something to help him.That's when I formed Team Winter for prostate cancer research and awareness." Through Team Winter and social media,Winter Vinecki has raised almost 500,000 dollars.She has taken prostate cancer education worldwide through foot races called marathons,on seven continents.In the United States she travels continually to talk about prostate cancer and urge others to act. Winter Vinecki attended a conference recently in Los Angeles,California and spoke at the conference as one of several teenagers who spoke about young people who were living extraordinary lives. "So prostate cancer is much more common but men don't want to talk about it.So that is why a ten-year-old girl had to go out there and start talking about it for them." Another speaker was Jack Andraka who invented a sensor which is not as expensive as traditional equipment that can't be afforded by most common people.It can identify cancers of the pancreas and lungs.He was 15 at the time. Jack is now 17 and seeking patents for his latest inventions.He has developed low-cost water quality equipment which can help identify and remove heavy metals and poisonous chemicals from water. "I hope to see them used in the developing nations such as Bangladesh and parts of China and India,especially as well as in parts of Africa,where these heavy metal and pesticides and other kinds of waste are a major problem."
Question: We can learn that Winter Vinecki's father died _ .
Options: (A) about 5 years ago (B) not long ago this year (C) only 10 months ago (D) when she was about 15
[A]:
A