O'Neill, Incorporated's segmented income statement for the most recent month is given belo w. Total Company Store A Store B $300,000 $100,000 $200,000 Sales Variable expenses Contribution margin..108,000 28,000 80,000 192,00072000 120,000 76,000 21000 55000 32,000 S 7000 S25.000 Segment margin.... Net operating income For each of the following questions, refer back to the above original data. S 5,000 The marketing department believes that a promotional campaign at Store A costing $6,000 will increase sales by $15,000. If its plan is adopted, overall company net operating income should: decrease by $1,800 decrease by $10,200 increase by $10,200 increase by $1,800