A reduction in the level of unemployment would have which effect with respect to the nation's production possibilities curve?
A. It would shift the curve to the left.
B. It would not shift the curve; it would be represented by moving from a point inside the curve toward the curve.
C. It would not shift the curve; it would be represented by moving from a point on the curve to a point to the right of the curve.
D. It would shift the curve to the right.