Your firm has estimated the following cash flows for a capital investment project. The firm's required rate of return is 12%. Which of the following is closest to the payback period for the project? Cash Flow -$136,000 at time o 43,350 at year 1 43,350 at year 2 43,350 at year 3 43,350 at year 4 43,350 at year 5 4 years 2.5 years 3 years 3.5 years 2 years