26. General Paper Corp. is considering an investment in a new paper mill that costs $230 million. The mill will generate after-tax operating cash flows of $55 million at the end of each of the next 8 years. The firm's WACC equals 7.15% and the after-tax cost of debt is 5.73%. What is the IRR of the paper mill investment? a) 7.15% b) 12.54% c) 17.19% d) 5.73% not enough information provided