Which One of the Following Statements Is Not True

Which one of the following statements is not true?

A) Depreciation is the process of allocating the purchase price of an asset minus its residual value to expense for each period benefited by the asset.
B) The cost of an asset includes all acquisition costs necessary to obtain the benefits to be derived from the asset.
C) The service life of an asset is the measure of the number of years of service expected from the asset before its disposal.
D) The residual value of an asset is the difference between the expected book value of the asset at the end of its service and the costs of disposal.