Question Completion Status: 1.5 points Save Arswer QUESTION 13 The marginal cost of capital is the firm's cost of debt and equity finance is constant given an optimal capital structure declines as flotation costs alter equity financing refers to the cost of additional financing 1.5 points Save Answer QUESTION 14 The cost of capital includes 1. cost of debt 2. cost of preferred stock 3. cost of retained earnings 1 and 2 1 and 3 2 and 3 O 1, 2, and 3 QUESTION 15 1.5 points Sa Click Save and Submit to save and submit. Click Save All Answers to save all answers