On January 1, 2019, ZALLAQ Co. purchased a machine for $960,000. The company estimated that the machine will have a 5-end its useful life is estimated to be $60,000. Required: A. Compute the amount of depreciation expense for the year ended December 31, 2019, using the straight-line method B. Compute the amount of depreciation expense for the years ended December 31, 2019 using units-of-production met in 2019. C. Compute the amount of depreciation expense for the year ended December 31, 2020 (year two), using the double-decline