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: Humans aren't the only ones getting a buzz from coffee.Caffeine can improve memory among honeybees and lead to better pollination .According to a recent study published in the journal Science. The study was conducted by a team of researchers at Newcastle University in the United Kingdom.They found that the nectar of some flowers,such as those from grapefruit and lemon plants,as well as certain coffee flowers,contains low doses of caffeine.To get bees to feed on these flowers,the team trained the insects to associate food with the smell of the flowers.They also trained another group of bees to feed on nectar from flowers that were sweetened with a sugar, but did not contain caffeine.After 24 hours,the bees trained on caffeinated flowers returned to these plants three times as often as those trained on the sweetened flowers returned to the uncaffeinated plants. Professor Geraldine Wright led the researchers."Remembering floral traits is difficult for bees to perform at a fast pace as they fly from flower to flower and we found that caffeine helps the bee remember where the flowers are,"Wright said in a statement. Improved memory led to the better pollination.That's because once bees sip the caffeine nectar, they continue to look for more coffee plants to pollinate.This also suggests that caffeine plays a role in improving the bees'ability to search for food. Researchers found that caffeine's effect on the bee brain is similar to its effect on mammals."The change is similar to that produced by caffeine in neurons associated with learning and memory in the rat brain,"Wright said. Bee populations have declining since 2007.The dramatic drop in the insects'numbers has serious effects for ecosystems and the farming industry.Bees are needed in the reproduction of crops and spreading wild flower species.Understanding what keeps bees buzzing could help to make sure that the insects are able to remember and pollinate their favorite flowers.
Question: Which of the following is mentioned in the passage?
Options: (A) Caffeine has no effect on the rat brain. (B) Bee population has been increasing. (C) The nectar of lemon plants contains caffeine. (D) Bees dislike nectar from sweetened flowers.
[EX A]: C

[EX Q]: Article: C.O.P.D blocks air flow through the lungs. It makes breathing difficult. The leading cause of C.O.P.D. is cigarette smoking. Experts at the National Institutes of Health in the United States say there is no cure to the damage to the lungs. Dawn Demeo is an assistant professor at Harvard Medical School in Boston, Massachusetts. She said, "By 2020, C.O.P.D. may be the third leading cause of death across the world." C.O.P.D. is a new name for emphysema and chronic bronchitis . These are the two most common forms of the disease. Many people with C.O.P.D. have both of them. And Doctor Demeo says more women than men now die from the disease. She is the lead author of a study by a team from Harvard's Brigham and Women's Hospital and the University of Bergen in Norway. The new study adds to findings that women may be more at risk than men from the damaging effects of smoking. The team examined results from a Norwegian study of 954 people with C.O.P.D. Inga-Cecilie Soerheim co-wrote the team's findings. Doctor Soerheim says they show that women suffered the same level of C.O.P.D.as men. But the female smokers were younger and had smoked a lot less. The team also looked at two groups among the people in the study. These were people under the age of 60 and those who had smoked for less than 20 years. In both cases, women had more serious C.O.P.D. and a greater loss of lung function than men.
Question: It can be known from the study that _ .
Options: (A) female smokers die faster than male ones. (B) women are more likely to suffer from the damaging effects of smoking than men. (C) O.P.D than women. (D) in the group of people under the age of 60, men suffered more from
[EX A]: B

[EX Q]: Article: Last week , US President Barack Obama visited upstate New York's Baseball Hall of Fame and Museum in an effort to highlight some of the United States' most-loved destinations and increase international tourism . " When it comes to tourism , we have a great product to sell , " he said . " Nothing says ' Made in America ' better than the Empire State Building or the Hoover Dam . " According to statistics , a record 70 million international visitors travelled to the US in 2013 . But that was still only 13% of the world's travelers--a smaller market share than the 17% that visited the United States in 2000 . Beyond the country's iconic locations--which travelers know all too well--the US is home to a great many charming and fascinating sights that often fly under the radar . Here are some of our favorites : The wild woodlands of the Great Smoky Mountains One of the oldest mountain rages in the world , this tranquil national park , which stretches across the Tennessee-North Carolina border , has a rich biodiversity that's equaled by few other places on the planet . Texas : Home to the world's largest bat colony Take nature watching to the extreme in the Lone Star State , where 1.5 million bats take flight over Austin every summer night . Idyllic beach towns--without the crowds Hidden away from the flood of summer travelers , these five little beach towns offer excellent surf spots , scenic views and Victorian charm . Philadelphia's mosaic masterpiece The city's downtown offers a one-of-a-kind artistic exploration , with 50,000sqft of tunnels , caves and walls covered in a bright and strange display of glass tiles , poetry and toys . Kentucky : An adventure heaven This state has one of the most amazing environments in the country , featuring both a rock climbing resort and the world's longest known cave system .
Question: If you are interested in the cave adventure , you can go to _ .
Options: (A) Tennessee (B) Kentucky (C) Texas (D) New York
[EX A]:
B