The Green Corporation is considering an investment with the following data (Ignore income taxes.): Year 1 Year 2 Year 3 Year 4 Year 5 Investment $ 10,000 $ 12,000 Cash inflow $ 4,000 $ 8,000 $ 10,000 $ 16,000 $ 16,000 The payback period for this investment is: 3.0 years 4.0 years 3.5 years 4.5 years