A machine was acquired on January 1,2022 , at a cost of $80,000. The machine was originally estimated to have a residual value of $5,000 and an estimated useful life of 5 years. The machine is expected to produce a total of 100,000 units during its life, as follows: 15,000 units in 2022 20,000 units in 2023 20,000 units in 2024 30,000 units in 2025 a) Calculate the amount of depreciation to be charged each year, using each of the following methods (Enter whole numbers. Only enter decimal points, if yi b) The method results in the highest depreciation expense during the first two years