Please show all steps and formulas used.

Computing Depreciation, Net Book Value, and Gain or Loss on Asset Sale recorded at the end of the fourth year, at which time Lynch disposes of this van. a. Compute the net book value of the van on the disposal date. b. Compute the gain or loss on sale of the van if the disposal proceeds are: Use a negative sign with your answer if the sale results in a loss. 1. A cash amount equal to the van's net book value. 2.$22,400 cash. $ 3. $18,400 cash. 4