The market portfolio represented by the S&P $500$ has a $12\%$ expected return & $20\%$ risk. The risk$-$free rate $=5\%$ & the investor$$s risk aversion coefficient A $=2\mathrm{.}5.$

Use Excel to plot the CAL and the indifference curve. Attach the Excel file to your submission in Canvas. Identify the optimal compete portfolio on the graph. Hint: There are several steps to solving this, which should be done in Excel. First find the utility of the optimal complete portfolio. Show how to do in excel with formulas: