Heidi Company is considering the acquisition of a machine that costs $466,000. The machine is expected to have a useful life of 6 years, a negligible residual value, an annual net cash inflow of $138,000, and annual operating income of $85,286. The estimated cash payback period for the machine is (round to one decimal point)? a. 5.5 years b. 3.4 years c. 5.5 years d. 4.0 years 2.cenowskimetssignmentai.donvokeretakatignmentSessionLocatorprogress-false