please solve all of the questions mentioned.

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.) Data Table (Click on the icon located on the top-right corner of the data table below in order to copy its contents into a spreadsheet.) Source of capital Long-term debt Book value Market value After-tax cost D $4,000,000 40,000 $3,840,000 60,000 3,000,000 6% Preferred stock 13% Common stock equity 1 060,000 $5,100,000 17% Totals $6,900,000 Print Done Enter your answer in the answer box and then click Check