3. Calculating interest rates The real risk-free rate (r) is 2.8% and is expected to remain constant. Inflation is expected to be 8% per year for each of the next five years and 7% thereafter. The maturity risk premium (MRP) is determined from the formula: 0.1(t - 1)%, where t is the security's maturity. The liquidity premium (LP) on all Pellegrini Southern Inc.'s bonds is 1.05%. The following table shows the current relationship between bond ratings and default risk premiums (DRP): Default Risk Premium Rating U.S. Treasury AAA 0.60% AA 4 0.80% 1.05% 1.45% BBB Pellegrini Southern Inc. issues 12-year, AA-rated bonds. What is the yield on one of these bonds? Disregard cross-product terms; that is, if averaging is required, use the arithmetic average 12.12% O 12.07% 5.75% 13.17% Based on your understanding of the determinants of interest rates, if everything else remains the same, which of the following will be true? The yield on an AAA-rated bond will be lower than the yield on an AA-rated bond. A BBB-rated bond has a lower default risk premium as compared to an AAA-rated bond