Assume the following information: Sales Variable expenses Contribution margin Fixed expenses Net operating income Amount $300,000 120,000 180,000 60,000 $120,000 Per Unit $40 16 $24 if the selling price per unit increases by 10% and unit sales drop by 5%, then the best of estimate of the new net operating income is Multiple Choice $128,100. $133,500 $139,500 $148.100