One division of the Marvin Educational Enterprises has depreciable assets costing $4,400,000. The cash flows from these assets for the past three years have been: Year Cash flows 1 $ 1,496,000 2 $ 1,716,000 3 $ 1,870,000 The current (i.e., replacement) costs of these assets were expected to increase 20% each year. Marvin used the straight-line depreciation method and the estimated useful life is 10-years with no salvage value. For return on investment (ROI) calculations, Marvin uses end-of-year balances. What is the ROI using current costs and net book value? Year 1 Year 2 Year 3 A. 25.0 % 30.7 % 34.7 % B. 22.3 % 24.7 % 24.7 % C. 20.4 % 21.4 % 20.8 % D. 20.4 % 33.9 % 35.1 %