Which type of market structure has the fewest number of firms?

Refer to the above figures. Which panel(s) represent the effect of a decrease in labor productivity?

A) Panel A only B) Panels A and C only C) Panel D only D) Panels B and D only

Which of the following is true? a. At the natural rate of unemployment, the economy is considered to be at full employment

b. At full employment, the economy is producing at its potential output. c. If unemployment is greater than its natural rate, the economy is producing at less than its potential output. d. All of the above are true.