The following investments all bear the same after-tax risk premium, r rp. Calculate the risk-adjusted pretax rates of return, Rra, for assets II, III, and IV, as well as the expected pretax total...

The following investments all bear the same after-tax risk premium, r rp. Calculate the risk-adjusted pretax rates of return, Rra, for assets II, III, and IV, as well as the expected pretax total return (unadjusted for risk, Ro ) for assets III and IV. Explain your answer, and give examples of each of these assets observed in the marketplace.