The Following Data Pertain to Darrell Industries

The following data pertain to Darrell Industries:
Interest rate on debt capital: 9%
Cost of equity capital: 12%
Before-tax operating income: $35 million
Market value of debt capital: $60 million
Market value of equity capital: $120 million
Total assets: $150 million
Income tax rate: 30%
Total current liabilities: $15 million
Required:
A. Compute Darrell's weighted-average cost of capital.
B. Compute Darrell's economic value added.
C. Briefly explain the meaning of economic value added.