AC36378 company produces and sells a product with the following characteristics: Selling price Variable expenses Contribution margin Per Unit $ 226 47 $ 179 The AC36378 company is currently selling 6,600 units per month. Fixed expenses are $894,000 per month, The sales manager would like to introduce commissions as an incentive for the sales staff. The sales manager has proposed a commission of $21 per unit. In exchange, the sales staff would accept a decrease in their salaries of $39,000 per month. (This is the company's savings for the entire sales staff) The manager predicts that introducing this sales incentive would increase monthly unit sales by 16%. What would be the overall effect on AC36378 company's monthly net operating income of this change? Multiple Choice O increase of $128,768 O increase of $83,080 (0 O increase of $102,720 O increase of $67,248