9. An economic contraction a. is another term for an economic boom, b. indicates that the economy is experiencing an increase in the level of employment. c. is not part of the business cycle. d. occurs when output is falling. e. always occurs after the trough in the business cycle. 10. An economic expansion a. is associated with an increase in the unemployment rate. b. indicates that the economy is experiencing a decrease in the level of unemployment. c. is that part of the business cycle between the peak and the trough. d. is not part of the business cycle. e. is associated with a decrease in the employment rate