Mantle Corporation is considering two equally risky investments: A $5,000 investment in preferred stock that yieids 7.85%. A $5,000 investment in a corporate bend that yields 9.30%. What is the breakeven corporate tax rate that makes the company indifferent between the two investments? Assume a 50.00% dividend exclusion for taxes on dividends. (Do not round your intermediate answer and round your final answer to two decimal places.) a. 26.98% b. 73,02% c. 15.59% d. 84,41% e. 57.80%