49.Your firm is financed using 20% debt, 30% preferred shares and 50% common shares, with the weights determined on a market value basis. The expected returns on each are 6.32% for debt on an after-tax basis, 7.55% for preferred shares and 12.21% for common shares. What is your firms weighted average cost of capital?Select one:a. 7.65%b. 8.05%c. 9.63%d. 11.22%e. None of the above