The following expected return and the standard deviation of current returns are known: (4 marks) Security (i) Expected Return Standard Deviation Bi A 0.20 0.12 1.1 B 0.12 0.10 0.8 T-Bills 0.05 0 0 Market Portfolio 0.20 0.15 1 a) Determine the weights of a portfolio with a standard deviation of 7% created by combining T-Bill and the market portfolio. b) Determine which of A or B is over-valued or undervalued. c) How will you invest $1000 in riskless T-bills and the risky assets in the Market Portfolio to maintain a standard deviation of 10%