On March 31, 2021, Canseco Plumbing Fixtures purchased equipment for $68,000. Residual value at the end of an estimated four-year service life is expected to be $8,000. The company expects the equipment to operate for 12,000 hours. The equipment operated for 4,100 and 4,900 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 C Calculate depreciation expense for 2021 and 2022 using straight line method. Straight-Line Depreciation Choose Numerator: Choose Denominator: Annual Depreciation - Annual Depreciation Year Annual Depreciation X Fraction of Year - Depreciation Expense 2021 2022 S 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. Depreciation for the Period End of Period Beginning of Period Annual Period Depreciation Fraction of Depreciation Accumulated Book Value Book Value Rate Year Expense Depreciation Required A Required > Complete this question by entering your answers in the tabs below. Required A Required B Required C Calculate depreciation expense for 2021 and 2022 using units-of-production using hours operated. (Round "Depreciation per machine hour" answers to 2 decimal places.) Select formula for Units of Production Depreciation: Calculate 2021 depreciation expense: Depreciation per machine hour Machine hours in 2021 Depreciation in 2021 Calculate 2022 depreciation expense Depreciation per machine hour Machine hours in 2022 Depreciation in 2022 Required B