Tangent of Efficient Portfolio Efficient Fronter of Risky Investments James has $10,000 invested in portfolio P. The risk-free rate is 4%. A frontier portfolio P has an expected return of 10% and a volatility of 4%. The tangent portfolio Q has an expected return of 16% and a volatility of 6%. Risk-Free Investment Volatility (standard deviation) (a) What is the Sharpe ratio of portfolio P? Does the portfolio have the highest Sharpe ratio among portfolios on the efficient frontier? [7 pt.] (b) James wants to maximize his expected return with maintaining his portfolio volatility at 4.5%. Propose the best portfolio consisting of P, Q, or risk-free investment. [9 pt.] (c) James wants to minimize his risk with maintaining his expected return at 14.5%. Propose the best portfolio consisting of P, Q, or risk-free investment. [9 pt.] Expected Return Efficient Frontier Including Risk-Free Investment