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 Internet has become a part of our everyday life and there is nothing we can do without it.It is a means of communication as well as a good way of relieving and having fun.No matter in what place of the world,the Internet is the same for every one of us. If we hope to improve our knowledge or look for a certain piece of information, the Internet is the perfect tool for our need.If we do not have the time to shop, ordering online is the solution to our problem.The Internet is very useful to most people. There is no doubt that the Internet also has some bad points.I'm speaking about the harmful information,which may come up in the most unexpected paces.You can sometimes come across violence,presented to the public as a very normal way of expressing beliefs.An intelligent person will always be able to tell apart right and wrong, but what can we do to help the teenagers and children? This sort of information is a cause of many of the violent incidents in schools. There are few organization that monitor the Internet and the information on it.They cannot possibly get rid of all the bad things on the Internet. So should the Internet be censored for the protection of children? My belief is that parents are the ones who should be to blame for what their children ale doing on the Internet.
Question: The disadvantage of the Internet mentioned in the passage is that _ .
Options: (A) people spend too much time on it. (B) people rely too much on it. (C) it can provide harmful information. (D) many people use it to do things that ale not legal

Ex Output:
C

Ex Input:
Article: The world's population is more mobile today than ever before. In 2010, more than 200 million people left their home countries to live in a new country. This is about 3 percent of the total world population. Some experts believe that number will swell to 400 million by 2050. Rates of immigration have remained strong for the last 300 years, but patterns of immigration have changed since World War II. The backgrounds and experiences of today's immigrants are different from those of the typical European immigrant of the nineteenth and early twentieth centuries. Contemporary immigrants range from unskilled laborers to highly skilled professionals, and they come from and go to countries all over the world. In the nineteenth century and until World War II, immigration was primarily in one direction- from the Old World to the New World. This is no longer the case. Countries such as Russia and China, which have long been, and continue to be, significant source countries, are now also destination countries. There is also considerable mobility inside regions, such as from one European country to another, or among the countries of the former Soviet Union. In spite of such differences, the push and pull factors for immigration remain essentially the same as they were 100 years ago. Most people move to another country because they want a better life. For the majority of immigrants, this means better economic conditions. As in past generations, a labor shortage in one country often draws workers from another country, especially if wages are significantly higher. In some small countries, for example, Qatar, United Arab Emirates, and Kuwait, there are more jobs than citizens. The demand for labor is so high that the majority of the population consists of foreign-born workers, ranging from highly skilled engineers and financial experts to domestic and construction workers. In traditional destination countries, such as the United States, however, labor needs have changed. Today, although there is still demand for unskilled labor, there is increasing demand for people with a high level of skill and education. The need for less skilled labor has shifted to other countries. As work on farms and in industry in the United States and Canada once drew workers from all over the world, now work in factories in Taiwan and south Korea attracts workers from Vietnam, the Philippines, and Cambodia. Most global immigration is legal: however, a large number of people also move across national borders illegally in pursuit of employment. Experts estimate that about 15 to 20 percent of immigrants worldwide are in their new countries illegally. The United States has the largest number of these immigrants, followed by South Africa, with significant numbers also in Northern and Western Europe and Mexico. These immigrants face particular challenges because they often must hide from the authorities who might deport them back to their home countries. Their illegal status also means that employers may take advantage of them by forcing them to work longer hours and paying them less than the legal minimum wage. Although economics remains the most important motivation in all forms of immigrant, other factors are also important. Some people decide to leave their home countries because their actions or political beliefs make it dangerous for them to remain. Others choose to leave because their home country has become too dangerous and unstable, often because of war or political unrest. They wish to find a place that is secure for themselves and their families. Education is also a significant factor for many modern immigrants. They want to raise their children in a place where they can get a good education, which, in turn, they hope will provide them with better prospects for the future. Finally, family and community ties also play a role in immigration decisions. As in the past, once a group of people from one country establishes a community in a new country, more people from that country is likely to follow. The pattern, direction, and rate of immigration may change as the global economy changes. However, as long as life in a new country is more attractive than life in the old country, immigration will continue.
Question: According to the reading, what are the patterns of immigration in China and Russia today?
Options: (A) Many people leave these countries while many people also immigrate to them. (B) They are major source countries for immigration. (C) They are major destination countries for immigrants. (D) Some people immigrate to these countries but many more people leave them.

Ex Output:
A

Ex Input:
Article: The first time Luca heard the Island of Inventions, he was very young, but the wonders he heard about sounded so unbelievable to him that they were forever kept in his memory. Since then, he never stopped searching clues which might lead him to that place of wonder. He read widely to collect information. Taking a little from here and there, he got quite a clear idea of what the Island was really like. It was a secret place, where all the great men learn and invent together. To be able to join that select club, you had to have created great inventions. Only then could you receive the invitation. To get a chance, Luca spend the years studying and inventing. Every new idea he got, he made it into an invention, and if there were anything he didn't understand, he would seek help. Soon he met other brilliant inventors too, and he told them of the secrets of the Island. These young inventors would likewise dream of being sent "the letter". As time passed, the disappointment of not being sent the letter gave rise to even greater cooperation and help between them. Their inventions soon became known throughout the world. But no invention came. They didn't lose heart. They continued learning and inventing, trying to come up with better ideas. Fresh talent was added to their group. One day, Luca, already very old, was speaking with a brilliant young man who had written to join their group. Luca told the young man the secrets of the Island, and of how he was sure that they would receive an invitation. Surprised, the young inventor said: "What? You mean this isn't really the Island of Inventions?" It inspired Luca and he realized that his dream had become true.
Question: Luca read widely to _ .
Options: (A) get information about the great inventions (B) get clear ideas about the island for vacations (C) seek massages about the secret club of inventions (D) get more knowledge for the benefit of his inventions

Ex Output:
C