Ceasar Inc. is considering the purchase of a new machine for $400,000. It is expected that the equipment will generate annual cash inflows of $90,000 and annual cash outflows of $25,600 over its 10 year life. Annual depreciation is $40,000. Compute the cash payback period.

Group of answer choices

6.3 years

16.39 years

6.21 years

4.44 years