At the beginning of 2023, the Mackinac Company purchased a machine for $510,000 (salvage value of $60,000) that had a useful life of 6 years. The bookkeeper used straight-line depreciation, but failed to deduct the salvage value in computing the depreciation base. Depreciation has been recorded through 2025. The errors were discovered on 1/10/26; the 2025 books are still open. Correcting journal entries would include what entry to 2025 Depreciation Expense?

Select one:

a. $10,000 debit

b. $10,000 credit

c. $20,000 debit

d. $20,000 credit