Suppose 30 -year T-bonds have a yield of 3.30% and 30 -year corporate bonds yield 7.70%. Also, corporate bonds have a 0.35% liquidity premium versus a zero liquidity premium for T-bonds, and the maturity risk premium on both Treasury and corporate 10 -year bonds is 1.15%. What is the default risk premium on corporate bonds? 4.40% 2.95% 3.25% 2.90% 4.05%