On January 1, 2021, a machine has a historical cost of $500,000 and accumulated depreciation of $470,000. The residual value of the machine is $25,000. The company uses the double-declining-balance method of depreciation. If 2021 is the last year for depreciation, what is Depreciation Expense for the year ending December 31, 2021? O $7,500 O $25,000 O $30,000 $5,000