The future earnings, dividends, and common stock price of Callahan Technologies Inc, are expected to grow 3% per year, Callahan's common stock currenty selis for $26.50 per share; its last dividend was $2.00; and it will pay a $2.06 dividend at the end of the current year- a. Using the DCF approach, what is its cost of common equity? Do not round intermediate calculations. Round your answer to two decimal places. b. If the firm's beta is 2.1, the risk-free rate is 6%, and the average return on the market is 14%, what will be the firm's cost of common equity wing the CapM asproach? Round your answer to two decimal places: c. If the firm's bends earn a return of 12%, based on the bond yleld-plus. risk-premium approach, what will be r4 ? Use the midpoint of the risk premium range discussed in Section 105 in your calculations. Round your answer to two decimal places. d. If you have equal confidence in the inputs used for the three approaches, what is your eitimate of Callahan's cest of common equity? Do not round intermediate calculations. Mound your answer to two decimal places