Movelt Corporation is the world's leading express-distribution company. In addition to its 643 aircraft, the company has more than 57,000 ground vehicles that pick up and deliver packages. Assume that Movelt sold a delivery truck for $27,000. Movelt had originally purchased the vehicle and recorded it in the Truck account for $45,000 and had recorded depreciation for three years, Required: 1. Calculate the amount of gain or loss on disposal, assuming that Accumulated Depreciation - Truck was (a) $18,000, (b) $12,000, and (C) $21,000. (Select "None" if there is no Gain or loss.) Gain/lous Amount (0) (b) (C)