An asset was acquired on January 1, 2018, for $15,000 with an estimated 4-year life and $1,000 residual value. The company uses straight-line depreciation. Calculate the gain or loss if the asset was sold on December 31, 2020, for $5,000.

		$1,500 gain.
		$500 gain.
		$500 loss.
		$3,000 loss.