suppose dell stock and the market portfolio have the following characteristics: Market return is 8%, variance of market return is 120, the covariance between Dell and market return is 90, variance of Dell return is 200, and the risk free rate 4%. (A) calculate beta for Dell stock, (B) what is the expected return on Dell stock using CAPM. (c) if the actual return on Dell is 9.5% what is your investment recommendation?