On January 1, Year 1, Li Company purchased an asset that cost $50,000. The asset had an expected useful life of five years and an estimated salvage value of $10,000. Li uses the straight-line method for the recognition of depreciation expense. At the beginning of the fourth year, the company revised its estimated salvage value to $5,000. What is the amount of depreciation expense to be recognized during Year 4? Book Multiple Choice $21,000 $8,000 $13,000 $10,500