Pine Corporation purchased a production machine for $800,000 on January 1, 2016. The estimated salvage value is $80,000, and the estimated useful life is 9 years. The straight-line method is used for depreciation. In 2019, Pine changed its estimates to a total useful life of 5 years with a salvage value of $120,000. What is 2020 depreciation expense?

		$80,000.
		$120,000.
		$220,000.
		$240,000.