a. Low birth rates mean that the share of the population that is working-age will fall over the next few decades. What impact will this have on spending on Medicare and Social Security? The share of GDP spent on these programs will decrease. The share of GDP spent on these programs will increase. Spending on these programs will increase, but the share of GDP spent on them will decrease. Spending on these programs will increase, but the share of GDP spent on them will remain the same. b. How might future spending change if Medicare and Social Security were discretionary spending programs instead? b. How might future spending change if Medicare and Social Security were discretionary spending programs instead? Spending on these programs would not be set at a constant level year after year. Changes in spending on these programs could be made each year. The burden of these programs would shift from taxes to the national debt. Spending on these programs would disappear. BRL C 723 PM 11/23/202 BO/ Rohome i no end insert prt sc muy poup 12Pgdn pouse break