Please explain how you got the Corporate bond.

Problem 2-22 Municipal Bond Interest (LO 2.10) Karen is a wealthy retired investment advisor who is in the 35 percent tax bracket. She has a choice between investing in a high-quality municipal bond paying 5 percent or a high-quality corporate bond paying 7 percent. a. What is the after-tax return of each bond? Enter your answer as a percent, rounded to two decimal places. Tax-exempt municipal bond: 5 % Corporate bond: % b. Which one should Karen invest in? Municipal bond