On January 1, 2017, Busy Beaver bought a new industrial lathe for $210,000. It expects to use the lathe for 10,000 hours over the next 5 years and then sell it for $10,000. Busy Beaver used the lathe for 2,000 hours in 2017 and 2,500 hours in 2018. Accumulated Depreciation at December 31, 2018, using units-of-production, equals: O $80,000. O $90,000. o $50,000. O $120,000