The Tiger Company has an opportunity to make an investment with the following estimated after tax cash flows: Year ATCE 0 -10,000,000 1 2,000,000 2 2,000,000 3 2,500,000 4 3,500,000 5 600,000 6 5,000,000 The company's required rate of return on such investments is 10%. Calculate the payback period, internal rate of return (IRR), net present value (NPV), and profitability index on this investment? What is the IRR? Carefully, explain its relationship to net present value (NPV, and the profitability index