Which of the following statements is false? a. The actual unemployment rate is equal to the number of persons unemployed divided by the civilian labor force. b. The natural unemployment rate is equal to the structural unemployment rate minus the frictional unemployment rate. c. The CPI in the base year is 100. d. A job leaver is a person who was employed in the civilian labor force and quit his or her job and is now looking for a new job. e. Unemployed persons equal job losers plus job leavers plus re-entrants plus new entrants