What Caused Stagflation in the United States During the 1970s

Multiple Choice

What caused stagflation in the United States during the 1970s?

A) The Federal Reserve sharply reduced the money supply.
B) Consumer optimism caused an increase in spending.
C) Members of the Organization of the Petroleum Exporting Countries (OPEC) reduced their production of oil and raised its price.
D) The federal government increased spending on social programs and the military.