A company purchases for $48,000 an asset that has a useful life of six years and no salvage value. After two years, the company spends $8,000 for a major overhaul that will extend the machine's useful life four years beyond the original six. Assuming straight-line depreciation, how much depreciation should be taken in year 3?

$4,000

$5,000

$5,600

$8,000