above $ cost of debt: % cost of equity: * % cost of capital: % What impact would each of the following have on the marginal cost of capital schedule? e. the firm's income tax rate increases If income tax rates were to rise, the effective cost of debt would -Select- would -Select- at all levels. and the marginal cost of capital f. the firm retains all of its earnings and the price of the stock is unaffected. Round your answers for the break-point to the nearest dollar and for the marginal costs to one decimal place. The marginal cost of capital schedule: $0 - $ cost of debt: cost of equity: cost of capital: -$ % % % cost of debt: cost of equity: % % cost of capital: % above $ cost of debt: % cost of equity: % cost of capital: %