suppose you hold a portfolio consisting of $10,000 investment in each of 8 different common stocks. the portfolios beta is 1.25. Now suppose you decide to sell one of your stocks that has a beta of 1.00 and to use the proceeds to buy a replacement stock with a beta of 2.15. what would portfolios new beta be? do not round intermediate calculations

a. 1.39 b. 1.09 c. 1.25 d. 1.59 . 1.19