Marigold Corp. is contemplating the replacement of an old machine with a new one. The following information has been gathered:

	Old Machine		New Machine
Price	$360000		$720000
Accumulated Depreciation	108000		-0-
Remaining useful life	10 years		-0-
Useful life	-0-		10 years
Annual operating costs	$288000		$216000

If the old machine is replaced, it can be sold for $28800. The company uses straight-line depreciation with a zero salvage value for all of its assets. Which of the following amounts is relevant to the replacement decision?

$360000

$72000

$108000

$252000