If We Look at Interest Payments on the U

If we look at interest payments on the U.S.national debt as a fraction of GDP since World War II, we realize that they

A) increased slightly but consistently as the national debt increased in size
B) increased from less than 2% 1980 to more than 3% in 1990
C) were higher between 2000 - 2010 than in any previous decade
D) always exceeded 2%
E) never exceeded 2%