Which of the following is true in the short run but not in the long run?

A) Actual output is equal to potential output.
B) Actual output can exceed potential output.
C) Structural unemployment can exist.
D) Frictional unemployment can exist.
E) Real and nominal GDP can differ.

Actual Output

The real production level of goods and services in an economy within a specific period, measured by GDP.

Potential Output

The maximum amount of goods and services an economy can produce when it is fully employed, without causing inflation.

Structural Unemployment

The occurrence of unemployment because of modifications in the industrial sector, typically induced by technological evolution, as opposed to alterations in the supply or demand of the market.