Assume an Efficient Frontier of Risky Assets which is identical for each investor in the market. Assume also that it is possible for investors to lend and borrow at the risk-free interest rate rf, and that the preferences of the representative investor can be specified through a standard utility function of the form U = E(r)- 0.005 times A times sigma^2(r) where r is the rate of return, A is the coefficient of risk aversion and 0.005 is a scale factor (i.e. a constant). Explain how the optimal Capital Allocation Line (CAL) can be constructed. Explain how an investor with such utility function will choose points along the CAL by combining risk-free financial securities with a portfolio of risky assets