Nantor Corporation has two divisions, Southern and Northern. The following information was taken from last year's income statement segmented by division:

	Total Company		Southern			Northern
Sales	$	8,000,000	$	5,000,000		$	3,000,000
Contribution margin	$	3,300,000	$	2,100,000		$	1,200,000
Divisional segment margin	$	1,700,000	$	1,400,000		$	600,000

Net operating income last year for Nantua Corporation was $800,000.

If the Northern Division's sales last year were $600,000 higher, how would this have changed Nantua's net operating income? (Assume no change in selling prices, variable expenses per unit, or fixed expenses.)

		$240,000 increase
		$60,000 increase
		$160,000 increase
		$1,200,000 increase