When a financial analyst adjusts a company's reported depreciation expense to improve comparisons of profitability with another firm that uses the same

depreciation method, the analyst assumes all of the following to be true except that:

Multiple Choice

salvage value proportions are roughly equivalent for both firms.

the useful life differences are artificial.

the dollar breakdown within asset categories is similar for both firms $($i$.$e$.,$ both have similar amounts of buildings vs$.$ leasehold improvements, etc.$).$

the useful lives differences are "real":