Percentage of Americans Aged 65 and Older

In 1900 = 4%

In 1950 = 8.2%

In 2000 = 12.4%

In 2050 = 20.2%

Based on this information, what is happening to the U.S. population?

ALife expectancy is increasing.
BThe population is increasing.
CAverage income is decreasing.
DThe poverty level is decreasing.