On June 1, Scotter Company purchased equipment at a cost of $120,000 that has a depreciable cost of $90,000 and an estimated useful life of 3 years or 30,000 hours. Using straight-line depreciation, calculate depreciation expense for the first year, which ends on December 31. a. 512.500 b. 530,000 c. $40,000 d. $17,500