If GDP in a Richer Country Grows at the Same

If GDP in a richer country grows at the same annual rate as in a poorer country,the

A) gap between their standards of living will widen over time.
B) gap between their standards of living will close over time.
C) gap between their standards of living will close over time as long as the rate of population growth is lower in the poorer country.
D) gap between their standards of living will close over time as long as the rate of population growth is lower in the richer country.
E) difference in their living standards will not change over time.