Since 1942, the Federal Government Debt as a Percentage of GDP

Since 1942, the federal government debt as a percentage of GDP

A) hit its highest point near World War II and then generally declined until the early 1980s.
B) increased over most of the period following World War II and hit it highest point during the early 1980s, after which is has declined.
C) has stayed roughly constant since the mid 1940s.
D) steadily increased and now is at its highest point ever.