A firm has an operating profit of $300,000, interest of $35,000, and a tax rate of 40 percent. The firm has an after tax cost of debt of 5 percent and a cost of equity of 15 percent. The firm's target capital structure is set at a mix of 40 percent debt and 60 percent equity. Assuming this as the optimum capital structure, the value of the firm is

a. 1.4 mil

b. 6 mil

c. 2.2 mil

d. 1.8 mil