As the Elderly Population of a Nation Expands as a Share

As the elderly population of a nation expands as a share of the total,

A) government expenditures on health care and retirement programs will generally decline.
B) economic growth is likely to slow because of a slowdown in the growth of productivity and higher taxes on current workers.
C) economic growth is likely to increase because the retirement of older workers will create high-paying jobs for younger workers.
D) government spending as a share of the economy in high-income countries like the United States will tend to fall.