Rollins Company. purchased machinery on January 2, 2015, for 440,000. The straight-line method is used and useful life is estimated to be 10 years, with a 40,000 residual value. At the beginning of 2021 Rollins spent 96,000 to overhaul the machinery. After the overhaul, Rollins estimated that the useful life would be extended 4 years (14 years total), and the residual value would be 20,000. The depreciation expense for 2021 should be 34.500 Ob 40,000 . 37,000 d. 28,250