Wing Air, Inc. has a target capital structure of60% percent common stock and40%percent debt. It's cost of equity is 12% percent and cost of debt is5% percent. The tax rate is 40% percent. What is Wing Air's weighted average cost of capital?

Common stock 60%

Debt 40%

Cost of equity 12%

Cost of debt 5%

Tax rate 40%

4.20%

8.40%

6.00%

10.08%