A Parent Company Acquires All of a Subsidiary's Voting Stock

A parent company acquires all of a subsidiary's voting stock at the beginning of 2018. At the date of acquisition, the subsidiary's equipment had a book value of $40 million and a fair value of $15 million. The equipment had a 10-year remaining life, straight-line. Consolidation eliminating entry (O) , on the consolidation working paper for 2021, has what effect on consolidated depreciation expense?

A) Debit for $2.5 million
B) Credit for $2.5 million
C) Debit for $10 million
D) Credit for $10 million