Answer both questions please! Thanks!

The real risk-free rate (r) is 2.8% and is expected to remain constant. Inflation is expected to be 5% per year for each of the next five years and 4% 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 Llukin Holdings Inc.'s bonds is 0.55%. The following table shows the current relationship between bond ratings and default risk premiums (ORP): Default Risk Premium Rating U.S. Treasury AAA 0.60% AA 0.80% 1.05% BBB 1.45% Llukin Holdings 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. 5.25% 8.57% 9.67% 9.12% 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. The yield on U.S. Treasury securities always remains static