Heidi Company is considering the acquisition of a machine that costs $453,000. The machine is expected to have a useful life of 6 year5, a negllplble residual value, an annual net cash inflow of $119,000, and annual operating income of $80,621. The estimated cash payback period for the machine is (round to one decimal point)? 13. 30 getin b. 5 b. c. 5.0 year d. 65 years