FRED - Real Gross Domestic Product 18,000 16,000 14,000 Billions of Chained 2009 Dollars 12.000 10,000 8,000 6,000 1985 1990 1995 2000 2005 2010 2015 Shaded areas indicate U.S. recessions Source: U.S. Bureau of Economic Analysis mytred/g/LIFE The US has had four recessions since 1981 when Ronald Reagan became President. Please research the recessions and answer the following questions: (You can use the following link: https://fred.stlouisfed.org/series/GDPC1 ) For the 1981-2 recession: a. What was the major cause of the economic downturn? b. How much did Real GDP fall in percentage term? C. What was the government fiscal and monetary response? d. How long did the following expansion last in quarters? How much did Real GDP rise during that period