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.

Article: Treasure hunts have excited people's imagination for hundreds of years both in real life and in books such as Robert Louis Stevenson's Treasure Island. Kit Williams, a modern writer, had the idea of combining the real excitement of a treasure hunt with clues found in a book when he wrote a children's story, Masquerade, in 1979. The book was about a hare, and a month before it came out, Williams buried a gold hare in a park in Bedfordshire. The book contained a large number of clues to help readers find the hare, but Williams put in a lot of "red herrings", or false clues, to mislead _ . Ken Roberts, the man who found the hare, had been looking for it for nearly two years. Although he had been searching in the wrong area most of the time, he found it by logic, not by luck. His success came from the fact that he had gained an important clue at the start. He had realized that the words: "One of Six to Eight" under the first picture in the book connected the hare in some way to Katherine of Aragon, the first of Henry VIII's six wives. Even here, however, Williams had succeeded in misleading him. Ken knew that Katherine of Aragon had died at Kimbolton in Cambridgeshire in 1536 and thought that Williams had buried the hare there. He had been digging there for over a year before a new idea occurred to him. He found out that Kit Williams had spent his childhood near Ampthill, in Bedfordshire, and thought that he must have buried the hare in a place he knew well, but he still could not see the connection with Katherine of Aragon, until one day he came across two stone crosses in Ampthill Park and learnt that they had been built in her honor in 1773. Even then his search had not come to an end. It was only after he had spent several nights digging around the cross that he decided to write to Kit Williams to find out if he was wasting his time there. Williams encouraged him to continue, and on February 24th 1982, he found the treasure. It was worth L3000 in the beginning, but the excitement it had caused since its burial made it much more valuable.
Question: What is the subject discussed in the text?
Options: (A) An exciting historical event. (B) The importance of logical thinking. (C) The attraction of Masquerade. (D) A modern treasure hunt.
D

Article: Signs in Chinese will be set up in public areas such as airports, to benefit Chinese travelers, the Italian Government announced in late February. _ . Despite the different languages, travel across Europe has never been so simple. Just five years ago, if you wanted to visit Germany in the north and Spain in the south in one trip, you had to wait for weeks to apply for different visas from the two countries. You also needed a calculator because both countries had different money. Today, with a Schengen Visa issued by any member country, you can travel across 15 European countries without stopping. Since 2002, within most of the EU, there is now just one type of money called the Euro. The Euro was designed to be the only money in the EU, and already makes it easier to shop around. If you drive, your driving license and car insurance policy are valid in the other European countries. And you can use your mobile phone everywhere. All the countries in the continent are melting into a united Europe under the EU. For Europeans and visitors, the result is that it is more convenient to travel back and forth between the different countries.
Question: Compared to five years ago, traveling in Europe has become easier because _ .
Options: (A) you needn't drive a car (B) you can use a calculator to exchange money (C) applying for different visas is much simpler (D) one visa is good enough for traveling in a number of countries
D

Article: In modern society, people can hardly do without mobile phone or computer. The youth of today are even more looking forward to Apple Corp's products. The iPad is an Apple tablet computer. The device sits somewhere between a laptop and a smart phone, according to Apple's chief executive, Steven P. Jobs, and does certain things better than both of them, like surfing the Web, reading e-books and playing videos. The iPad went on sale on April 3, 2010, and Apple said it had shipped 500,000 units in the first week. The handheld device puts Apple on a direct collision course with the Kindle from Amazon, which Mr. Jobs ever considered as pioneering the category. It is common knowledge that media companies hope the iPad will finally lead to available ways for them to charge for news, books and other materials. The half-inch thick, 1.5-pound device features a 9.7-inch multi-touch screen and is powered by a customized Apple microchip, which is called A4. It has been designed with an exposed screen and without a camera or separate keyboard. The iPad has the same operating system as the iPhone and also has access to its 140,000 applications. The price of the device starts at $499 for the most basic model, with a Wi-Fi wireless connection. More expensive models with more memory and with 3G wireless access will cost $629 to $829, depending on storage size. Because Apple is attempting to popularize a new kind of computing device, acceptance among consumers is expected to be slower than with previous Apple devices. Critics assume that some buyers are waiting for future versions of the iPad to appear, perhaps with a camera or USB ports . On its first day on sale, iPad users downloaded more than one million applications from the company's AppStore and more than 250,000 electronic books from its iBookstore. A new wave of apps is expected in response to the iPad. For an application developer, having an application accepted for a highly desired Apple product means reaching a passionate group of consumers. The potential income is huge: the apps market for the iPhone and iPod Touch alone is already worth a billion dollars a year in sales.
Question: In Mr. Job's opinion, the iPad _ .
Options: (A) is a standard computer (B) is better than a laptop in any function (C) is a "revolutionary" product between a laptop and a smart phone (D) helps Apple to beat Amazon
C