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: Argentina's Lionel Messi has won the Golden Ball awarded to the European Footballer of the Year, becoming the sixth Barcelona player to take the award and the first since Brazilian Ronaldinho in 2005. Messi beat last year's winner Cristiano Ronaldo into second place while Barcelona midfielder Xavi Hernandez finished third in the poll results released by France Football magazine early Tuesday. Praised by Argentina great Diego Maradona as his successor, Messi won an unprecedented treble in Spain last season with Barcelona as the Catalan side swept the Champions League, the Spanish title and the Copa del Rey. The 22-year-old Messi, the first Argentine to win the world-famous award, was the top scorer in last year's Champions League with nine goals, including his superb header in the 2-0 victory over Manchester United in the final. Messi, who scored 473 of a possible 480 points, largely controlled the voting and won with a record-margin of 240 points. Real Madrid winger Ronaldo had 233 and Xavi had 170. "Honestly, I knew that I was among the favorites because Barcelona had a fruitful year in 2009," Messi was quoted as saying by the magazine. " _ The Golden Ball is very important to me. All the players who won it were great players, and some great players never won it." Barcelona had three players in the Top 5 with Andres Iniesta taking fourth ahead of former Barca player Samuel Eto'o. In an outstanding season, Messi netted(...) 38 goals in 51 games in all competitions, often leaving defenders in his wake(...) with a combination of speed, extraordinary abilities and his effective left-footed strike. Messi, who led Argentina to next year's World Cup in South Africa, recently signed a new contract with Barcelona through 2016. Messi had a good start to this season - already scoring nine goals - and put on a great display to help his club defeat archrival Real Madrid 1-0 last Sunday. "It won't be easy to confirm after a year like the one we just went through," Messi said. "I hope the next one will reach the same standards. But to win the Golden Ball two years in a row is not an easy thing." (Read by Guanny Liu. Guanny Liu is a multimedia journalist at the China Daily Web site.)
Question: Which of the following is the suitable title?
Options: (A) Messi beats (B) Ronaldinho beats Messi to win the European Footballer of the Year (C) Messi beats Xavi to win the European Footballer of the Year (D) Ronaldinho beats Xavi to win the European Footballer of the Year
[EX A]: A

[EX Q]: Article: Wild elephants live in herds of 10 to about 50. The leader is usually a female. A herd can go through a forest quietly. It travels in a single line. It goes about 6 miles an hour. When frightened, it may run at about 25 miles an hour. When they reach water, elephants swim across. They are great swimmers. Elephants eat grass, leaves, small branches, and bark. They particularly like the tender leaves on the top of trees. How do they get these leaves? They use their heads to knock trees down. They can easily knock down a 30-foot tree. Elephants also eat berries, mangoes, coconuts, corn, and sugar cane. They love salt. A wild male adult eats 500 to 600 pounds of food a day. Many people want to find the graveyards of elephants. There is a strong belief that such graveyards exist. Here is why. Bones and tusks of dead elephants have almost never been found. Searches have been made in forests. Grassy plains have been searched too. But neither bones nor tusks are found. Elephants don't live forever. Where are their bones? They don't just bury themselves. Here is one belief. When an elephant gets sick or old, it instinctively knows death is near. It leaves the herd. It goes off to a secret graveyard. The place is known only to elephants, and perhaps other animals, but not to humans. Obviously, such a graveyard would be filled with tusks. These were once very valuable. The objective of explorers was to find this "gold" mine. This graveyard belief may be a truth or a myth. But it is romantic. It would be nice if it were true.
Question: An elephant usually travels at a speed of _ per hour.
Options: (A) around 6 miles (B) around 25 miles (C) no more than 6 miles (D) more than 25 miles
[EX A]: A

[EX Q]: Article: Unlike traditional commercials, Public Service Advertisements(PSA)are primarily designed to inform and educate rather than sell a product or service. The goal of a PSA is not to make a big sale, but rather to change public opinion and raise awareness for a problem. Smokey Bear has been a recognized symbol of the protection of America's forests from fire. It is created to educate the public about the dangers of wildfires. Smokey Bear was started in 1944 with the slogan, "Smokey Bear Says--Care will prevent 9 out of 10 forest fires". Smokey Bear's later slogan, "Remember! Only You Can Prevent Forest Fires", was created in 1947 by the Advertising Council in America. In April 2001, the message was changed to "Only You Can Prevent Wildfires". The wildfire prevention campaign with Smokey Bear is one of the longest and most successful campaigns in advertising history. The Advertising Council often was in partnership with other organizations and groups to create various advertising for Smokey Bear since 1944. The Advertising Council teamed with Walt Disney Company to create a series of PSAs. The ads feature(***)characters form the classic film Sleeping Beauty and aim to reach parents and children. The lovely Bambi also appeared in the advertisements. Mickey Mouse is much more popular throughout the country. Those PSAs, which appear on television, on the radio, in the newspaper and on the website continue to remind Americans about the importance of wildfire prevention have helped to reduce the number of acres burned annually by wildfires. According to recent survey, Smokey Bear and his famous words of wisdom "Only You Can Prevent Wildfires" are recalled by 3 out of 4 adults. In addition to the PSA campaign, Smokey Bear has his own U.S. postage stamp and website for more information about wildfire prevention. From the website, you can also learn all about wildfires and how we can protect our forests.
Question: PSA are primarily designed to _ .
Options: (A) educate the public (B) change people's status (C) discuss a problem (D) sell products or services
[EX A]:
A