Ref Corporation is planning to repurchase part of its common stock by issuing corporate debt. As a result, the firm's debt-equity is expected to rise from 35 percent to 50 percent. The firm currently has $2.7 million worth of debt outstanding. The pretax cost of debt is 6.4 percent. The firm expects to have an aftertax earnings of $940,000 per year in perpetuity. The corporate tax rate is 21 percent

A.What is ROE before the announcement

B.What is the ROA of the firm

C.What is ROE after the announcement

D.What is the WACC