A company is considering purchasing a machine that costs $216000 and is estimated to have no salvage value at the end of its 8 -year useful life. If the machine is purchased, annual revenues are expected to be $100000 and annual operating expenses exclusive of depreciation expense are expected to be $38000. The straight-line method of depreciation would be used. If the machine is purchased, the annual rate of return expected on this machine is 32.41%28.70%16.20%57.40%