Grade A. Rogot Instruments makes fine violins and cellos. It has $12 million in debt outstanding, equity valued at $3.1 million, and pays corporate income tax at rate 24% Its cost of equity is 12% and its cost of debt is 8% a. What is Rogot's pre-tax WACC? b. What is Rogot's (effective after-tax) WACC? a. What is Rogot's pre-tax WACC? Rogot's pre-tax WACC is % (Round to two decimal places) b. What is Rogot's (effective after-tax) WACC? Rogot's (etfective after tax) WACC is % (Round to two decimal places.) C