Keyspan corp is planning to issue debi that will mature in 2033 in many respects, the issue is similar to the currently outstanding debt of the corporation Use Tablei11 3 o. Calculate the yleld to maturly on simliany outstanding debt for the firm in terms of maturity. (tnput your onswer as a percent rounded to 2 decimol places) determined is pon b. What is the new yeyd to matunty? (Do notround intermediate calellations. Input your onswer os a percent rounded to 2 decimal pleces:) c. If the firm is in a 25 percent tax bracket, what is the aftertax cost of debt for the yield determined in part b? (Do not round intermediate calculations. Input your answer as a percent rounded to 2 decimal places.)