Weir Inc. has a target capital structure of 30% debt, 20% preferred, and 50% common equity. The interest rate on new debt is 6.50%, the yield on the preferred is 6.00%, the cost of retained earnings is 8.8%, and the tax rate is 40%. The WACC for Weir is:
6.81%
6.62%
6.77%
6.99%
6.60%