Hayden Company is considering the acquisition of a machine that costs $430,000. The machine is expected to have a useful life of six years, a negligible residual value, an annual net cash flow of $93,000, and annual operating income of $79,050. What is the estimated cash payback period for the machine (round to one decimal points)? O years O, 1.2 years Oc 6 years d. 46 years