When originally purchased, a vehicle had an estimated useful life of 8 years. The vehicle cost $43,000 and its estimated residual value is $3,000. After 3 years of straight-line depreciation, the assets total estimated useful life was revised from 8 years to 4 years and there was no change in the estimated residual value. The Depreciation Expense in year 4 is:

$10,000

$9,725

$25,000

$6,525