Kelly Inc's 5-year bonds yield 7.50% and 5-year T-bonds yield 4.70%. The real risk-free rate is r* = 2.5%, the default risk premium for Kelly's bonds is DRP = 0.40%, the liquidity premium on Kelly's bonds is LP = 2.4% versus zero on T-bonds, and the inflation premium (IP) is 1.5%. What is the maturity risk premium (MRP) on all 5-year bonds?

a. 0.57%
b. 0.70%
c. 0.74%
d. 0.55%
e. 0.73%