8-7 PORTFOLIO REQUIRED RETURN Suppose you are the money manager of a $4.82 million investment fund. The fund consists of four stocks with the following investments and betas: Stock Investment Beta A $ 460,000 1.50 B 500,000 (0.50) 1,260,000 1.25 D 2,600,000 0.75 If the market's required rate of return is 8% and the risk-free rate is 4%, what is the fund's required rate of return