17. Suppose you held a diversified portfolio consisting of 10 different common stocks, investing $500 in each stock. The portfolio's beta is 1.9. Now suppose you decided to sell one of the stocks in your portfolio with a beta of 0.8 for $500 and use the proceeds to buy another stock with a beta of 1.25. What would your portfolio's new beta be? * O a) 1.074 b) 2.025 c) 3.865 d) 4.2 e) None of the above