Marshall Company purchases a machine for $640,000 . The machine has an estimated residual value of $100,000 . The company expects the machine to produce two million units. The machine is used to make 660, 000 units during the current period

Marshall Company purchases a machine for $640,000. The machine has an estimated residual value of $100,000. The company expects the machine to produce two million units. The machine is used to make 660,000 units during the current period. If the units-of-production method is used, the depreciation expense for this period is: Multiple Choice o $660,000. o $211,200. o $560,000