17) The adjustment that is made to allocate the cost of a building over its expected life is called:A) depreciation expense.B) residual value.C) accumulated depreciation.D) None of the above answers are correct. 18) Bob purchased a truck for $54,000 with a residual value of $29,000 and a life of 4 years; using straight-line depreciation, the amount of the depreciation adjustment for the first year would be:A) $13,500.B) $6250.C) $7250.D) $6750.19) Which of the following would be an example of a contra-asset?A) Depreciation ExpenseB) Unearned RevenueC) Accumulated DepreciationD) Prepaid Rent20) Residual value is the:A) estimated value of the asset when it is purchased.B) estimated value of the asset at the end of its useful life.C) cost of the asset.D) same as book value.