Bark Company is considering buying a machine for $240,000 with an estimated life of ten years and no salvage value. The straight-line method of depreciation will be used. The machine is expected to generate net income of $6,000 each year. The cash payback period on this investment is

Select one:

a. 10 years.

b. 20 years

c. 8 years.

d. 4 years.