When an Increase in the Economy's Capital Stock Increases Productivity

Multiple Choice

When an increase in the economy's capital stock increases productivity:

A) the short-run aggregate-supply curve shifts to the right, and the long-run aggregate-supply curve shifts to the left
B) the short-run aggregate-supply curve shifts to the left, and the long-run aggregate-supply curve shifts to the right
C) both short-run and long-run aggregate-supply curves shift to the left
D) both short-run and long-run aggregate-supply curves shift to the right