Which of the following are true of the trends in the business cycles in the U.S. economy during 2007-2009? Multiple select question. The U.S. economy entered into a recession in 2008 and remained there for the first two quarters of 2009. The trough was reached between the second and the third quarters of 2007. The U.S. economy showed signs of expansion from 2007 to 2009. The peak was reached between the fourth quarter of 2007 and the first quarter of 2008