Quantitative Problem: You are holding a portfolio with the following investments and betas: Stock Dollar investment % $300,000 100,000 300,000 300,000 Beta A B C D Total investment $1,000,000 The market's required return is 9% and the risk-free rate is 4%. What is the portfolio's required return? Do not round intermediate calculations. Round your answer to three decimal places. 1.30 1.70 0.75 -0.30