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 $400,000 at time 0 100,000 at year 1 130.000 at year 2 130,000 at year 3 80,000 at year 4 40,000 at year 5 O 4 years o 2 years O 3.5 years O 3 years O 2.5 years