15 An increase in the velocity while holding money supply constant d Select one out of O a shifts the AD curve to the night resulting in the short run in an increase in the price level and a decrease of the output level Ob shifts the AD curve to the left resulting in the short run in no effect in the price level and a decrease in the output level c. shifts the AD curve to the left resulting in the short run in a decrease in the price level and an increase of the output level Od shifts the AD curve to the right resulting in the short run in no effect in the price level and an increase in the output level