Id Debt Ratio Equity Ratio WACC Is 9.40% 30% 70% 6.02% 9.71% 40% 60% 6.75% 9.750% 9.55% 50% 50% 7.15% 10.60% 10.02% 60% 40% 7.55% 11.30% 10.78% 11.45% 70% 30% 8.24% 12.80% Which capital structure shown in the preceding table is Universal Exports Inc.'s optimal capital structure? O Debt ratio = 60%; equity ratio = 40% O Debt ratio = 50%; equity ratio = 50% O Debt ratio = 30%; equity ratio = 70% O Debt ratio = 70%; equity ratio = 30% O Debt ratio = 40%; equity ratio = 60% Consider this case: Globex Corp. is an all-equity firm, and it has a beta of 1. It is considering changing its capital structure to 70% equity and 30% debt. The firm's cost of debt will be 6%, and it will face a tax rate of 25%. What will Globex Corp.'s beta be if it decides to make this change in its capital structure