In a month when it sold 200 units of product. Queen Manufacturing Company (QMC) produced the following internal income statement: QMC has the opportunity to alter its operations in one of the following ways: Increasing fixed advertising costs by $1, 600, thereby increasing sales by 120 units. Lowering commissions paid to the sales staff by $8 per unit, thereby reducing sales by 10 units. Decreasing fixed inventory holding cost by $800, thereby decreasing sales by 20 units