Sterling Steel Inc. purchased a new stamping machine at the beginning of the year at a cost of $580,000. The estimated residual value was $60,000. Assume that the estimated useful life was five years, and the estimated productive life of the machine was 260,000 units. Actual annual production was as follows: (a) Establish the RATE that is needed to depreciate this asset using units-of-production method. (b) Prepare a depreciation schedule for Years 1-5 using straight-line method (c) Prepare a depreciation schedule for Years 1-5 using units-of-production method