There are stories about two U.S. presidents, Andrew Jackson and Martin Van Buren, which attempt to explain the American English term OK. We don’t know if either story is true, but they are both interesting. The first explanation is based on the fact that President Jackson had very little education. In fact, he had difficulty reading and writing. When important papers came to Jackson, he tried to read them and then had his assistants explain what they saiD.If he approved of a paper, he would write “all correct” on it. The problem was that he didn’t know how spell, so what he really wrote was “ol korekt”. After a while, he shortened that term to “OK”. The second explanation is based on the place where President Van Buren was born, Kinderhook, New York. Van Buren’s friends organized a club to help him become President. They called the club the Old Kinderhook Club, and anyone who supported Van Buren was called “OK”. The author_______________. A.believes both of the stories B.doesn’t believe a word of the stories C.is not sure whether the stories are true D.is telling the stories just for fun According to the first story, the term “OK”________________.A.was approved of by President Jackson B.was the title of some official documents C.was first used by President Jackson D.was an old way to spell “all correct” According to the passage, President Jackson________________.A.couldn’t draw up any documents at all B.didn’t like to read important papers by himself C.often had his assistants sign documents for him D.wasn’t good at reading or spelling According to the second story, the term “OK”______________.A.was the short way to say “Old Kinderhook Club” B.meant the place where President Van Buren was born C.was the name of Van Buren’s club D.was used to call Van Buren’s supporters in the election According to the second story, the term “OK” was first used____________.A.by Van Buren B.in a presidential election C.to organize the Old Kinderhook Club D.by the members of the “Old Kinderhook Club” 请帮忙给出每个问题的正确答案和分析，谢谢！