A company has provided the following data: Sales 3,000 units Sales Price $70 per unit Variable Cost $50 per unit Fixed Cost $25,000 If the dollar contribution margin per unit is increased by 10%, total fixed cost is decreased by 20%, and all other factors remain the same, net operating income will: A. increase by $61,000. B. increase by $20,000. C. increase by $3,500. D. increase by $11,000.