Source of capital Long-term debt Preferred stock Common stock equity Totals Book value $4,000,000 40,000 1,060,000 $5,100,000 Market value $3,800,000 55,000 4,388,000 $8,243,000 After-tax cost o 9% 11% 17% WACCBook weights and market weights Webster Company has compiled the information shown in the following table: a. Calculate the weighted average cost of capital using book value weights. b. Calculate the weighted average cost of capital using market value weights. c. Compare the answers obtained in parts a and b. Explain the differences. a. The firm's weighted average cost of capital using book value weights is %. (Round to two decimal places.)