In recent years, Wildhorse Corporation has purchased three machines. Because of frequent employee turnover in the accounting department, a different accountant was in charge of selecting the depreciation method for each machine, and various methods have been used. Information concerning the machines is summarized in the table below. For the diminishing-balance method, Wildhorse Corporation uses double the straight-line rate. For the units-of-production method, total machine hours are expected to be 23,710 . Actual hours of use in the first 3 years were: 2019,370;2020,4,130; and 2021,4,700. Machine 2: Diminishing-balance depreciation Machine 3: Units-of-nroduction depreciation