15 The MPC is ut of Select one: a. the change in consumption divided by the change in income. b. the change in consumption divided by the change in saving. C. consumption divided by income. d. the change in saving divided by the change in income. Because of the multiplier, a one-time change in expenditure will Select one: a. decrease saving and investment activity and thereby decrease future real GDP. b. generate more additional real GDP than the initial change in expenditure. c. expand real GDP by an infinite amount. d. have little secondary effect on real GDP