1. Interpreting Beta and Portolio Betas 6. If market retums increase by 1%, how much would Firm D's retums change by? 7. What is the portfolio Beta if a portfolio contains 1 share each of Fim A, B, C, and D's stocks? 8. Is the portfolio in (7.) more or less volatile than the overall market? 9. What is the portfolio Beta if a portfolio contains 10 shares of Fim A's stock, 5 shares of Fim B's stock, 5 shares of Fim C's stock, and 20 shares of Firm D's stock? 10. Is the portfolio in (9.) moreorless volatile than the ovenll market