_ 19. Assume that real risk-free rate (r*) = 1.00%; the maturity risk premium is found as MRP = 0.20% * (t-1), where t = years to maturity; the default risk premium for AT&T bonds is found as DRP = 0.07% * (t-1); the liquidity premium (LP) is 0.50 percent for AT&T bonds but zero for Treasury bonds; and inflation is expected to be 7 percent, 6 percent, and 5 percent during the next three years and then 4 percent thereafter. What is the difference in interest rates between 10-year AT&T bonds and 10-year Treasury bonds? (Round answer to two decimal places.) a. 0.25% b. 0.50% c. 0.63% d. 1.00% e. 1.13%