If a company purchases a piece of equipment on June 30 for $16,000 with no disposal value and an estimated production capacity of 40,000 bearings, what is the depreciation expense at the end of the first year if they produce 7000 bearings: A) $ 6,000 B) $ 4,000 C) $ 2,800 D) $ 7,000 E) $ 8,000