Machiel Manufacturing acquired a $60,000 machine on January 1, 2009. The machine is estimated to have a useful life of 4 years, and a residual value of $10,000. For units-of-production depreciation purposes, the machine is expected to produce 500,000 units. If Machiel Manufacturing uses double-declining-balance depreciation, what is the depreciation expense in 2010?

Select one: A. $25,000 B. $ 8,640 C. $ 9,600 D. $15,000 E. $12,500