Crestview Estates purchased a tractor on January 1, 2018, for $65,000. The tractor's useful life is estimated to be 30,000 miles and has a residual value of $5,000. If Crestview used the tractor 5,000 miles in 2018 and 3,000 miles in 2019 , what is the balance for accumulated depreciation at the end of 2019 using the activity-based method? Select one: A. $38,000. B. $10,000. C. $6,000. D. $16,000, Clear my choice