]Which of the following describes what would happen after a positive supply shock
such as a decrease in world oil prices?
a. An upward shift of the aggregate supply curve as unit costs increase, followed by a
gradual decrease in the wage as employment decreases, leading to a downward shift of
the aggregate supply curve.
b. A downward shift of the aggregate supply curve as unit costs decrease, followed by a
gradual increase in the wage as employment increases, leading to an upward shift of the
aggregate supply curve.
c. An upward shift of the aggregate supply curve as unit costs increase, followed by a
gradual decrease in the wage as employment decreases, leading to an upward shift of
the aggregate supply curve.
d. A downward shift of the aggregate supply curve as unit costs decrease, followed by a
gradual decrease in the wage as employment decreases, leading to a downward shift of
the aggregate supply curve.
e. An upward shift of the aggregate demand curve.
Whether an excise tax is imposed on a demander or supplier is irrelevant because
a. in either case the price that the demander has to pay will decrease; while the price the
supplier receives will increase
b. in either case the price that the demander has to pay will increase; while the price the
supplier receives will decrease
c. either situation will create excess demand
d. either situation will create excess supply