Waller, Inc., is trying to determine its cost of debt. The firm has a debt issue outstanding with 13 years to maturity that is quoted at 96 percent of face value. The issue makes semiannual payments and has an embedded cost (.e. a coupon rate as an APR) of 12 percent annually. Required: What is the company's pre-tax cost of debt as an APR? (Do not round your (a) intermediate calculations.) (Click to select) (b)lf the tax rate is 33 percent, what is the after-tax cost of debt as an APR? (Do not round your intermediate calculations.) (Click to select)