The Historical Record for the United States Since 1900 Shows

The historical record for the United States since 1900 shows

A) growth until 1970 and then a period of constant per person real GDP.
B) economic growth for about half the years and economic decline for the other half.
C) continuous economic growth for each year, although at different rates, throughout the entire century.
D) mostly positive economic growth, though the Great Depression caused actual GDP to dip well below potential GDP.