Use the units of production method to compute the unit rate and the annual depreciation for a machine that costs $28.000 with a useful life of 4 years and a residual value of $2, 400. The machine is expected to produce 320,000 units over its life. What would the depreciation for the first year be if 75,000 units were produced? $6, 563 $6, 400 $6,000 $5, 900