A machine that cost $24,000 and on which $18,000 of Accumulated Depreciation has been recorded was sold on January 1. The company uses a calendar year. If the machine was sold for $4,000 cash, the journal entry to record this event would include a: Select one: O a. Credit to the Machinery account for $6,000 O b. Credit to Accumulated Depreciation for $18,000 c. Loss of $2,000 O O d. Gain of $2,000