Between 1945 and 2010, the Average Interest Rate on the U.S.national

Multiple Choice

Between 1945 and 2010, the average interest rate on the U.S.national debt

A) increased slightly but consistently
B) decreased consistently despite an increasing national debt
C) followed roughly the same pattern as the debt-to-GDP ratio
D) peaked in the early 1980s
E) never exceeded 6 percent