O'Neill, Inc's income statement for the most recent month Sales Contribution Margin Segment Margin Total $4,000,000 $1,650.000 $850,000 Southern $2,500,000 $1.050,000 $700.000 Northern $1,500,000 $600,000 $150,000 If the Northern Division's sales increase by $300,000, how would this affect the company's net operating income? net operating income? $120,000 increase $30,000 increase $123,750 increase $150,000 increase