West Sides Pizza bought a used Nissan delivery van on January 2, 2010, for $19,000. The van was expected to remain in service for four years (36,000 miles). At the end of its useful life, West Sides officials estimated that the vans residual value would be $2,800. The van traveled 11,000 miles the first year, 13,000 miles the second year, 5,000 miles the third year, and 7,000 miles in the fourth year. Prepare a schedule of depreciation expense per year for the van under the three depreciation methods. (For units-of-production and double-declining-balance, round to the nearest two decimals after each step of the calculation.) Which method best tracks the wear and tear on the van? Which method would West Sides prefer to use for income tax purposes? Explain in detail why West Sides prefers this method.