Which of the following is correct?
a The short-run, but not the long-run, aggregate supply curve is consistent with the idea that a change in price does not affect real variables.
b The long-run, but not the short-run, aggregate supply curve is consistent with the idea that a change in price does not affect real variables.
c The long-run and short-run supply curves are both consistent with the idea that a change in price does affect real variables.
d Neither the long-run nor the short-run aggregate supply curve is consistent with the idea that a change in price does affect real variables.



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