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.

Input: Consider Input: Article: They tell us when to get up or when we're running late for work and whether we are in danger of missing our favourite TV programme. But while our daily routines rely on clocks that tell us the time, science is discovering that our well-being is influenced by a very different kind of timepiece. Circadian rhythms---the human body's own internal clock---have a powerful influence on our health and behaviour. _ are programmed from birth and control functions ranging from temperature and blood pressure to sleep patterns. In recent years researchers have also discovered that this built-in mechanism can influence everything from the way we react to medicines to how well we learn music. The latest example, from experts at Harvard University in the US, shows that the human body clock can even dictate whether or not we are likely to tell the truth. Researchers found it was easier for people to fib  in the afternoon because, as they were tired, the self control that would normally prevent them from lying started to break down. Tiredness made it harder to resist the temptation to tell lies---especially if it meant they got a financial reward at the end. "The body clock has a great effect on us all," says Professor Jim Horne from the Sleep Research Centre at Loughborough University. "Most people tend to feel good around late morning and then decline in the early afternoon. But the time most of us will feel our sharpest is between 6pm and 8pm. That's because sleepiness tends to build up throughout the day. By early evening our body clock kicks in to wake us up. One reason may be to ensure we get home safely. When our ancestors were coming home after hunting all day their internal clocks kicked in to get them home in one piece." So what effects do circadian rhythms have and what's the best time of day to take advantage of them? 
 Question: According to the passage, when are people most quick-thinking? 
 Options: (A) In the morning. (B) Around midday. (C) In the late afternoon. (D) In the early evening.

Output: D


Input: Consider Input: Article: Experts believe that storms and severe weather in North America and Asia have disrupted bird flight paths across the world and swept huge numbers of bird species towards the British Isles. Birds flying to the other side of the Atlantic or to the Pacific to lay their eggs have been trapped in Britain and Ireland, adding their numbers to native species, and causing great excitement in the bird-watching community. Local birdwatchers have already observed a total of 442 species in the British Isles this year. The highest number ever seen in one year is 445, in 2008. "We only need four more to break our record," said Lee Evans, who runs the British Birding Association. "With three months to go I'm sure we'll do it." Last month an extremely rare Siberian Rubythroat bird was seen in Scotland, sending hundreds of birdwatchers north in the hope of catching a glimpse of this colourful Asian beauty. Another very uncommon bird, the bufflehead duck was cited in Cornwell and caused similar excitement. "I couldn't believe it," said Evans. "The poor thing was completely  _ . It must have been blown to England by the storms while trying to fly from Canada to the southern United States for the winter. That's 3000 miles!" Evans said that global warming over the past decade was playing a key role in transforming bird movements across the world. In addition, melting Arctic sea ice may also be opening up bird flight paths over the North Pole, making it easier for birds from the Pacific -- such as the slaty-backed gull and tufted puffin, both of which appeared in London earlier this year -- to reach Britain. Bird-watching is becoming an increasingly popular hobby among all age groups, added Evans. "A fifth of our members are under 18. This is a round-the-year hobby that you can enjoy from the kitchen window or from a car. More and more people are bird-watching, and as a result more and more unexpected species are being spotted in the British Isles." 
 Question: What is the passage mainly about? 
 Options: (A) The results of global warming. (B) Changes in the British bird population. (C) Increasing environmental pollution. (D) Worsening British weather.

Output: B


Input: Consider Input: Article: Zoe was just 2 weeks old when she was seen wandering in a village market wax Kenya's Tsavo National Park in December 1995.Zoe's mother had died and the baby was left alone, She was no ordinary orphan  --she was an elephant.So she was sent to a most unusual orphanage in Nairobi, run by a woman named Daphne Sheldrick, Daphne's husband, David Sheldrick, founded Tsavo National Park.Daphne has been working with wild animals for some 60 years, and in 1977 she opened the elephant orphanage at her home in Nairobi.Since 1997, the orphanage, which depends on private contributions, has saved more than 100 baby elephants, Zoe was rather healthy when she was found, and once under the care of the orphanage she was very happy, having enough milk a day and being confident and naughty.After a year in the orphanage with the constant companionship of her human family, Zoe was taken to a refuge   at Tsavo National Park.There her keepers have gradually introduced her to the ways of the wild, helping her to find food and water.Zoe lives together with other young elephants in the protected area.It may take some years, but the final aim is to send all of them to the wild. Daphne said that her dream for the future is to see ivory   trade forbidden, all stored ivory destroyed and no one wearing an ivory ornament   ever again."There will always be competition for land," she explained? "but we can protect elephants in the parks and give the young a chance." 
 Question: Zoe was sent to an elephant orphanage because   _  . 
 Options: (A) she could not find her way home (B) Daphne wanted to keep her as a pet (C) she was very young when she lost her mother (D) Tsavo National Park needed a baby elephant


Output: C


