Orton Corporation, which has a calendar year accounting period, purchased a new machine for $80,000 on April 1, 2016. At that time Orton expected to use the machine for nine years and then sell it for $8,000. The machine was sold for $44.000 on Sept. 30, 2021. Assuming straight-line depreciation, no depreciation in the year of acquisition, and a full year of depreciation in the year of retirement, the gain to be recognized at the time of sale would be a) $0. b) $4,000 c) $8,000 d) $6.000