You are evaluating various investment opportunities currently available and you have calculated expected returns and standard deviations for five different well-diversified portfolios of risky assets: Portfolio Expected Return Standard Deviation 8.6% 10.6% R 9.9 14.9 S 4.8 4.6 T C - 12.8 16.3 7.7 8.6 a. For each portfolio, calculate the risk premium per unit of risk that you expect to receive ([E(R) - RFR]/). Assume that the risk-free rate is 4.0 percent. Round your answers to four decimal places. Q: R: S: T: U: b. Using your computations in Part (a), explain which of these five portfolios is most likely to be the market portfolio. Round your answer to four decimal places. Portfolio -Select- + has the | -Select- + ratio of risk premium per unit of risk, of these five portfolios so it is most likely the market portfolio