Can you please help me answer these questions. Thank you.

Review this situation: Transworld Consortium Corp. is trying to identify its optimal capital structure. Transworld Consortium Corp. has gathered the following financial information to help with the analysis Debt Ratio Equity Ratio rd 30% 40% 50% 60% 70% 70% 60% 50% 40% 30% 6.02% 6.75% 7.15% 7.55% 8.24% 9.40% 9.750% 10.60% 11.30% 12.80% WACC 9.71% 9.55% 10.02% 10.78% 11.45% Which capital structure shown in the preceding table is Transworld Consortium Corp.'s optimal capital structure? Debt ratio = 30%; equity ratio 70% Debt ratio = 70%; equity ratio 30% Debt ratio = 60%; equity ratio 40% Debt ratio = 40%; equity ratio 60% Debt ratio = 50%; equity ratio= 50% Consider this case Globex Corp. currently has a capital structure consisting of 30% debt and 70% equity. However, Globex Corp.'s CFO has suggested that the firm increase its debt ratio to 50%. The current risk-free rate is 3.5%, the market risk premium is 8%, and Globex Corp.'s beta is 1.10 If the firm's tax rate is 35%, what will be the beta of an all-equity firm if its operations were exactly the same? 0.86 0.69 0.99 ider the case of another company 0.73