An increase in productivity will likely cause Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a the AS curve to shift upward, but has no effect on the AD curve. b the AS curve to shift downward, and the AD curve to shift leftward. c the AS curve to shift upward and the AD curve to shift rightward. d the AS curve to shift downward and the AD curve to shift rightward. e the AS curve to shift downward, and have an ambiguous effect on the AD curve