Presented below is the contribution format income statement of Olin Company for last month. The company produced and sold 15,000 units of its single product. Sales Variable Expenses Contribution Margin Fixed Expenses Not Operating Income $750,000 450.000 300,000 90,000 $210,000 9. If the number of unit sales increases by 100 units, by how much will the net operating income increase?" OO $2,000 $5,000 $210,000 $300,000 None of the above