WAR Duluth Ranch, Inc. purchased a machine on January 1, 2018. The cost of the machine was $41,000. Its estimated residual value was $13,000 at the end of an estimated 5-year life. The company expects to produce a total of 20,000 units. The company produced 1,500 units in 2018 and 1,950 units in 2019, Required: a. Calculate depreciation expense for 2018 and 2019 using the straight-line method. b. Calculate the depreciation expense for 2018 and 2019 using the units of production method. c. Calculate depreciation expense for 2018 through 2022 using the double declining balance method. Complete this question by entering your answers in the tabs below. Required A Required B Required Calculate depreciation expense for 2018 and 2019 using the straight-line method. 2018 2019 Depreciation Expense Per Year Required B >