57. The difference between the real wage and the nominal wage is that the real wage is adjusted for changes in:

a. The price level.

b. Hours worked.

c. Output.

d. The money supply.

59. Inflation arises due to:

a. the negative output gap, the positive output gap, and unexpected inflation.

b. changes in real output, changes in nominal output, and changes in the unemployment rate.

c. inflation expectations, potential output, and the non-accelerating inflation rate of unemployment (NAIRU).

d. inflation expectations, demand-pull inflation, and cost-push inflation.