Fields Company purchased equipment on January 1 for $180,000. This system has a useful life of 8 years and a salvage value of $20,000. The company estimates that the equipment will produce 40,000 units over its 8-year useful life. Actual units produced are: Year 1 โ€“ 4,000 units; Year 2 โ€“ 6,000 units; Year 3 โ€“ 8,000 units; Year 4 โ€“ 5,000 units; Year 5 โ€“ 4,000 units; Year 6 โ€“ 5,000 units; Year 7 โ€“ 7,000 units; Year 8 โ€“ 3,000 units. What would be the depreciation expense for the second year of its useful life using the units-of-production method?Select one:A. $16,000.B. $24,000.C. $45,000.D. $33,750.E. $20,000.