On March 31, 2021, Canseco Plumbing Fixtures purchased equipment for $54,000. Residual value at the end of an estimated four-year service life is expected to be $10,000. The company expects the equipment to operate for 20,000 hours. The equipment operated for 3,400 and 4,200 hours in 2021 and 2022, respectively. Required: a. Calculate depreciation expense for 2021 and 2022 using straight-line method. b. Calculate depreciation expense for 2021 and 2022 using double-declining balance method. c. Calculate depreciation expense for 2021 and 2022 using units-of-production using hours operated Complete this question by entering your answers in the tabs below. Required A Required B Required Calculate depreciation expense for 2021 and 2022 using double-declining balance method Double Declining-Balance Method Choose Numerator Choose Denominator Fraction of Year - Depreciation Expense Formula Fraction of Year Depreciation Expense Amount for 2021 % Amount for 2022 M