Sartol Industries sold a machine for $220,000 on July 1, 2020. This machine had a 5 year expected life and a salvage value of $100,000. It also originally cost $600,000. On January 1, 2020, the accumulated depreciation account had a balance of $350,000, using the straight-line method. What is the gain or loss on the disposal? a$20,000gaina$30,000gaina$20,000lossa$30,000loss