Equipment purchased at the beginning of the fiscal year for $360,000 is expected to have a useful life of 5 years, or 14,000 operating hours, and a residual value of $10,000. Assume 1,200 hours were used the first year and 2,250, the second year. What is the first-year depreciation for straight-line (SL), double-declining balance (DDB) and units- of-output (UOO) methods? a. SL: $72,000; DDB: $140,000; UOO: $56,250 Ob. SL: $70,000; DDB: $140,000; UOO: $30,000 c. SL:$70,000, DDB: $144,000; UOO: $30,000 d. SL: $72,000; DDB: $144,000; UOO: $30,000