Please explain your work!

a. b. Moyle Co. acquired a machine on January 1, 2019, at a cost of $2,900,000. The machine is expected to have a five-year useful life, with a salvage value of $160,000. The machine is capable of producing 1,755,000 units of product in its lifetime. Actual production was as follows: 351,000 units in 2019; 234,000 units in 2020; 468,000 units in 2021; 292,500 units in 2022; and 409,500 units in 2023. Accumulated Depreciation Accumulated Depreciation 1,160,000 12/31/19 548,000 12/31/19 696,000 12/31/20 548,000 12/31/20 417,600 12/31/21 548,000 12/31/21 250,560 12/31/22 548,000 12/31/22 150,336 12/31/23 548,000 12/31/23 Accumulated Depreciation d. Accumulated Depreciation 548,000 12/31/19 870,000 12/31/19 365,333 12/31/20 609,000 12/31/20 730,667 12/31/21 426,300 12/31/21 456,667 12/31/22 298,410 12/31/22 639, 333 12/31/23 208,887 12/31/23 Required: Refer to the above T-accounts, identify the depreciation method that would result in each of the following annual credit amount patterns to accumulated depreciation. If a declining-balance method is used, indicate the percentage (150% or 200%). (Hint: What do the amounts shown for each year represent?) Event Depreciation method a. b. C. d