During the period 1984 to 2008, the average yield on 3-Month U.S. Treasury bills was 4.76%, the average inflation rate was 2.97%, the average yield on 30-year Treasury bonds was 6.89%, and the average return on 30-year Aaa-Rated Corporate Bonds was 7.73%. The real risk-free short-term interest rate is
A 1.79%.
B 2.13%.
C 2.97%.
D 4.76%