If left alone, the recession experienced by an economy will cause the short-run:
A) aggregate supply curve to shift downward until the equilibrium GDP is back at full employment.
B) aggregate supply curve to shift upward until the equilibrium GDP is back at full employment.
C) aggregate demand curve to shift downward until the equilibrium GDP is back at full employment.
D) aggregate demand curve to shift upward until the equilibrium GDP is back at full employment.