if the natural rate of unemployment is 4.7 percent and the actual rate of unemployment is 5.5 percent, then by definition there is a. cyclical unemployment amounting to 0.8 percent of the labor force. b. frictional unemployment amounting to 0.8 percent of the labor force. c. structural unemployment amounting to 0.8 percent of the labor force. d. search unemployment amounting to 0.8 percent of the labor force.