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The optimal risky portfolio can be identified by finding: O A. The minimum-variance point on the efficient frontier O B. The maximum-return point on the efficient frontier and the minimum- variance point on the efficient frontier O C. The line with the steepest slope the connects the risk-free rate to the efficient frontier O D. None of the above The risk-free rate is 4%. The return on a risky portfolio is 10%. The standard deviation of return on the risky portfolio is 18%. If the standard deviation on the complete portfolio is 24%, the expected return on the complete portfolio is O A. 12.0% OB. 14.5% O C. 10.8% OD. 16.2%