Heather Company is considering the acquisition of a machine that costs $360,000. The machine is expected to have a useful life of 6 years, a negligible residual value, an annual cash flow of $120,000, and annual operating income of $83,721.

What is the estimated cash payback period for the machine?A. 5 yearsB. 2.5 yearsC. 4.3 yearsD. 3 years