Arbitrary FirmName Ltd has a target debt-equity ratio of 0.60 . Its weighted average cost of capital (WACC) under a classical tax system is 8.70% and the corporate tax rate is 22.50%. A) If Arbitrary FirmName's cost of equity is 12.30%, what is their pre-tax cost of debt? % (Round your answer to two decimal places) B) If Arbitrary FirmName's after-tax cost of debt is 2.80%, what is their cost of equity? % (Round your answer to two decimal places)