b) The policy committee of Suntex finance recently used reports from various security analyst to develop inputs for the single-index model. Output derived from the single-index model consisted of the following efficient portfolios: Portfolio I 2 3 4 5 Expected Return E(R) Standard Deviation 8% 3% 10% 6% 13% 8% 17% 13% 20% 18% a) If the prevailing risk-free rate is 6%, which portfolio is the best? b) Assume that the policy committee would like to earn an expected 10% with a of 4%. Is it possible? c) Is of 12% were acceptable, what would the expected portfolio return be and how would the expected portfolio return be and how would Suntex finance achieve it.