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Historical Realized Rates of Return You ate considering an investment in either individual stocks or a fa trobo of stocks. The two stocks you ate researching, 5 tock A and 5 tock B, have the following histonical retuins: stock A+ Stock bir valibes, of any, should be indicated toy a mamus sign. C. Calculate the standard deviation of returnis for each stock and teg file portfolio. Do not round intermediate calculations. Round your answers to two decintal places. A. risk-averse invester stiould chooset since it offer expected return with