A gas-powered electric generator is purchased by a public utility as part of an expansion program. It is expected to be useful, with proper maintenance, for an estimated 30 years. The cost is $17 million, installed. The salvage value at the end of 30 years is expected to be 8.5% of the original cost. a. What is the MACRS-GDS property class? b. Determine the depreciation deduction (dt) and the unrecovered investment (Bt) for years 1, 5, and the last depreciable year of the generator di = $ - B4 = $ ds = $ , B5 = $ dlast year = $ Blast year = $