The discovery of new oil deposits will cause

A) the long-run aggregate supply curve to shift to the right and the short-run aggregate supply curve to shift to the left.
B) the long-run aggregate supply curve to shift to the right, but not the short-run aggregate supply.
C) the short-run aggregate supply curve to shift to the right, but not the long-run aggregate supply curve.
D) both the long-run and the short-run aggregate supply curves to shift to the right.

ANSWER:

D