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.

Example Input: Article: The 9.2magnitude earthquake which caused the tsunami in the Indian Ocean on Boxing Day last year occurred at 7:58 a.m.,95 miles off the west coast of Aceh, Indonesia. Eighteen minutes later.10-metre high waves crashed the ashore along a 500----mile-long stretch of Aceh. Two hours later the tsunami hit Thailand and Malaysia and then Burma, Bangladesh, India,the Maldives,Sri Lanka,Kenya and Somalia.The final death toll is thought to be about 280,000,with tens of thousands more listed as missing.More than l.8 million people lost their homes. *What Is Tsunami? A tsunami is a chain of fast moving waves caused by a sudden strong quake in the ocean.They can be caused by earthquakes,volcanic eruptions ,or even the collision of meteorites .Tsunamis are also incorrectly known as tidal waves,but unlike tidal waves they are not caused by changes in the tides. They are also most common around the edge of the Pacific,where more than half of the world's volcanoes are found.These fast moving waves can attack coastlines,often with little or no warning.Rocks weighing as much as 20 metric tonnes have been pulled from sea walls and carried l 80m inland. *Wave Power Atsunami can have a wavelength in excess of 1 00km and there may be an hour between them.They travel at great speeds across an ocean with hardly any energy losses and are barely noticeable out at sea. Over the deep Pacific Ocean,a tsunami travels at about 800kph.If an earthquake happened in Los Angeles.a tsunami could hit Tokyo quicker than you could fly between the cities by jet. *Strange Animal Behaviors Ten days before giant waves slammed into Sri Lanka and India coastlines,wild and domestic animals seemed to know what was about to happen and fled to safety. Elephants screamed and ran for higher ground. Dogs refused to go outdoors. Zoo animals rushed into their shelters and could not be enticed to come back out.
Question: ..What does the first part of the passage mainly tell us?
Options: (A) The great speed of a tsunami. (B) The number of deaths caused by a tsunami. (C) The countries which were struck by a tsunami. (D) The serious destruction caused by the great power of a tsunaml.
Example Output: D

Example Input: Article: James Proud, a British businessman who settled in San Francisco launched a Twitter campaign called "Stop DST". Daylight Saving Time (DST) refers to the time during the summer when clocks are one hour ahead of standard time. "Daylight saving was created to save energy, and it doesn't really do that." Proud said, "but what's even worse are its negative health effects. It's both outdated and harmful." daylight saving has been linked to a surprising number of health issues such as heart attacks, but Proud has a particular interest in the topic because of its disruptive effects on sleep. Last year, German researchers suggested that our body cocks never really adjust t daylight saving, which causes a host of health problems. Till Roenneberg of Ludwig-Maximillians University said that because of DST, "the majority of the population has severely decreased productivity, decreased quality of life, increasing chance of getting illness, and is just plain tired." The week after daylight saving also witnesses a sudden increase in fatal traffic accidents, according to the University of Colorado. It is believed that this is caused both by disrupted sleep schedules and the shift of daylight hours from the morning to the evening. "Daylight saving is an economic tradition. And all economic choices involve achieving a balance. " said behavioral economist David Gerard. "Even if we decide to abolish daylight saving, there would be a large number of unhappy people." Some such people are shift works, students and parents of schoolchildren, all of whom get to enjoy an extra hour of daylight after work or class with DST. Plus, restaurants love the extra evening sales DST allows. Daylight saving has also been linked to lower crime rates, due to the "deterrent effect" of longer daylight. Basically, more light increase a criminal's chances of being seen by witnesses or police, which discourages criminal activity. Gerard also point out that an extra hour of daylight has vastly more influence in the American South, where the sun sets earlier, even in the summer, than in the north. That's why residents of southern states may values DST more.
Question: What causes Proud's greatest concern?
Options: (A) DST not keeping up with economic development (B) DST resulting in disorder in people's sleep schedule (C) DST stopping people from working productively. (D) DST not helping to save energy any more
Example Output: B

Example Input: Article: Taiwanese fishing boats that sailed to the Diaoyu Islands to protest Japan's "purchase" of part of the islands completed their voyage Tuesday morning and have set sail for home. Local media reported that the boats finished their protest at 9:15 a.m. and are expected to return to a port in northeast Taiwan's Yilan county at noon Wednesday. Although the boats originally numbered 75,they were joined at sea by other boats from different parts of Taiwan, raising the total number to about 100 vessels. Organizers said the voyage was made to protect Taiwanese fishing rights in nearby waters and to protest Japan's "purchase" of part of the Diaoyu Islands. The Japanese government announced a plan to "purchase" part of the islands earlier this month despite repeated protests from the Chinese government. The action aroused demonstrations across China as well as consumers' boycott of Japanese products in recent weeks. Local authorities in Taiwan have also protested the move. "Japan's purchase and nationalization of China's Diaoyu Islands are putting China-Japan economic and trade ties at risk due to man-made factors." An official spokesman from Beijing warned . China-Japan economic and trade relations was back on track in 1952 when the two countries signed their first non-governmental trade agreement. Currently, China has been Japan's largest trade partner since 2007 while Japan is China's fourth largest trade partner, after the EU, U.S. and the ASEAN. Meanwhile, China is the biggest destination for Japanese exports and biggest source of imports. In the first half of 2012, Japan's exports to China totaled 73.54 billion U.S. dollars, down 6.2 percent from the same period last year, while its import from China was 91.29 billion U.S. dollars, up 7 percent from the same period last year. Now, China-Japan economic and trade relations are at a crossroads. Negotiation could be the way out of the rift.
Question: Why are China-Japan economic and trade relations at a crossroads?
Options: (A) Because Taiwan fishing boats sailed to the island to protest Japan. (B) Because Taiwanese are deprived of their fishing right. (C) Because Japan is not China's largest trade partner. (D) Because Japan announced to purchase China's Diaoyu Islands.
Example Output:
D