Does monetary neutrality mean that changes in the money supply can never affect real? GDP? A. ?Yes, monetary neutrality means that money supply changes only affect one? variable, the nominal interest rate. Real GDP is never impacted. B. ?Yes, monetary neutrality means that money supply changes only affect one? variable, the price level. Real GDP is never impacted. C. ?No, monetary neutrality only means that changes in the money supply will not affect real GDP in the short run. Changes in the money supply can and do affect real GDP in the long run. D. ?No, monetary neutrality only means that changes in the money supply will not affect real GDP in the long run. Changes in the money supply can and do affect real GDP in the short run.