What is the internal rate of return, net present value with a 10% interest rate, and net present value with a 20% interest rate of this project. The cash flows are as follows: Year 0 - Initial investment - 20,000 (make sure to make investments negative values in Excel cash flow) Year 1 - 18,000 Year 2 - 8,000 Year 3 - 9,000 Year 4- 12,000 No value after year 4.