4. A company's annual accounting period ends on September 30. During the current year, a depreciable asset that cost $16,000 was purchased on January 1. The asset has a $2,000 estimated salvage value. The company uses straight-line depreciation and expects the asset to have a four-year life. What is the total depreciation expense for the current year? A. $4,000 B. $3,000 C. $3,500 D. $2,625 E. $875