Miller Company's contribution format income statement for the most recent month is shown below. Sales (40,000 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 320,000 200,000 120,000 40,000 $ 80,000 Per Unit $ 8.00 5.00 $ 3.00 Required: (Consider each case independently): 1. What is the revised net operating Income If unit sales increase by 18%? 2. What is the revised net operating Income if the selling price decreases by $110 per unit and the number of units sold increases by 18%? 3. What is the revised net operating income if the selling price increases by $110 per unit, fixed expenses increase by $6,000, and the number of units sold decreases by 4%? 4. What is the revised net operating Income if the selling price per unit increases by 20%, variable expenses increase by 10 cents per unit, and the number of units sold decreases by 8%? 1. Not operating income 2 Not operating income 3 Net operating income 4 Not operating income