instruction:
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.
question:
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
answer:
B

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Article: Just five one-hundredths of an inch thick and light golden in color, the Lay's potato chip seems an unlikely weapon for global control. But its maker, Frito-Lay doesn't think so. "Potato chips are a snack food for the world , "said Salman Amin, the company's head of global marketing. Amin believes there is no corner of the world that can resist the attractions of a Frito-Lay potato chip. Frito-Lay is the biggest snack maker in America owned by Pepsico and accounts for over half of the parent company's $ 3 billion profits every year. But the U.S. snack food market is largely saturated ,and to grow, the company has to look overseas. Its strategy rests on two beliefs: first, a global product offers economies of scale with which local brands cannot compete. And second, consumers in the 21st century are drawn to "global" as a concept. "Global" does not mean products that are consciously regarded as American, but ones that consumers--especially young people--see as part of a modern, innovative world in which people are linked across cultures by shared beliefs and tastes. Potato chips are an American invention, but most Chinese, for example, do not know that Frito-Lay is an American company. Instead, Riskey, the company's research and development head, would hope they associate the brand with the new world of global communications and business. With brand concept a key factor, Riskey ordered a redesign of the Frito-Lay logo . The logo, along with the company's long-held marketing image of its chips, would help make the company's global development very easy. The managers admit that they try to change national eating habits to a food created in America, but they don't think that means economic imperialism . "We're making products in those countries, we're adapting them to the tastes of those countries, building businesses and employing people and changing lives , "said Steve Reinemund, Pepsico's chief manager.
Question: Amin's belief is that _ .
Options: (A) people all over the world enjoy eating their potato chips (B) the light golden color increases the attraction of their potato chips (C) they must find new ways to promote sales in their country (D) potato chips can hardly control the world market
answer:
C

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Article: Chokwe Selassie, aged 13, is working hard to help drivers avoid potholes . The eighth-grader was inspired to kick off his creation on a recent morning, when his mother was driving him to school. Their car was damaged as it went over a huge pothole in the middle of the street in their hometown of Jackson, Mississippi. He decided to do something about the pothole problem in his city. Chokwe developed the app with his friends Rodriguez Ratliff and Emmanuel Brooks. When the app detects a pothole, it is highlighted in red. And if you get close to the pothole, your phone will warn you with a beep. Drivers can also use the app to report any potholes and look for other routes they can take to avoid roads that have them. The app relies on current available information about the streets of Jackson, already stored in a database of the city's 311 call system. Through the call system, citizens dial 3-1-1 to report non-emergency problems which include potholes. Chokwe and his friends determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test the prototype. While developing the app, the boys took part in a Minority Male Makers Program sponsored by Verizon and held at Jackson State University. They learned 3D printing and design, and how to create apps. Through the program Chokwe and his friends received encouragement and guidance. Although the app isn't yet available for sale, Chokwe is already looking for ways to improve the app. He hopes to add more to it until it spreads all over the country.
Question: What is the app used to do?
Options: (A) Warn drivers about potholes. (B) Help drivers obey traffic rules. (C) Stop drivers using mobile phones. (D) Tell drivers to avoid red lights.
answer:
A