Nantua 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	$4,400,000	$2,740,000	$1,660,000
Contribution margin	$1,850,000	$1,170,000	$680,000
Divisional segment margin	$970,000	$780,000	$190,000

Net operating income last year for Nantua Corporation was $440,000.

In last year's income statement segmented by division, what were Nantua's total common fixed expenses?

a)$530,000

b)$880,000

c)$1,410,000

d)$1,500,000