Following is the most recent FINRA bond quote for a Kimberly Clark Inc. corporate bond. (Assume semi-annual coupons)

Company (ticker) Coupon Maturity Last Price

Kimberly Clark (KMB) 7.500 Apr 30, 2040 112.350

What is the after-tax cost of debt for Kimberly Clark, Inc. assuming that floatation costs are 3% and that Kimberly Clark pays taxes at a 28% rate? (Assume today is April 30, 2020)

4.81%

4.96%

5.40%

6.68%

9.68%