If the Economy Is Simultaneously in Long-Run and Short-Run Equilibrium,which

Multiple Choice

If the economy is simultaneously in long-run and short-run equilibrium,which of the following is not true?

A) The actual price level equals the expected price level.
B) Aggregate quantity supplied equals potential output.
C) Aggregate quantity demanded equals potential output.
D) Aggregate quantity supplied equals aggregate quantity demanded.
E) The aggregate demand curve is horizontal at the potential output level.