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 $5,200,000 $3,220,000 $1,980,000 Contribution margin $2,250,000 $1,410,000 $840,000 Divisional segment margin $1,210,000 $940,000 $270,000 Net operating income last year for Nantua Corporation was $520,000. In last year's income statement segmented by division, what were Nantua's total common fixed expenses? $690,000 $1,040,000 $1,730,000 $1,900,000