Artis Corp. purchased a piece of movable equipment for $20,000 on January 1, Year 3. The company expensed the full amount of the purchase in Year 3, although it was later determined that the equipment would have a useful life of five years. Assuming the company uses a standard straight-line depreciation convention for all assets, after the adjusting journal entry is made at the end of Year 3, the impact will be: O A. An increase to pretax income of $16,000. O B. An increase to assets of $20,000. O C. A decrease to pretax income of $20,000. O D. A decrease to assets of $16,000