Determine the internal rate of return for a project that costs $167,000 and would yield after-tax cash flows of $22,000 per year for the first 5 years, $30,000 per year for the next 5 years, and $43,000 per year for the following 5 years. a) 14.94% b) 11.97% c) 13.38% d) 11.51% e) 14.19%