Miller Company's contribution format income statement for the most recent month is shown below: Per Unit $ 6.00 3.00 $ 3.00 Total Sales (36,000 units) Variable expenses Contribution margin Fixed expenses Net operating income $ 216,000 108,00e 108,000 43,000 $ 65,000 Required: (Consider each case independently) 1, what is the revised net operating income if unit sales increase by 20%? 2. What is the revised net operating income if the selling price decreases by $1.20 per unit and the number of units sold increases by 15%? 3. What is the revised net operating income if the selling price increases by $1.20 per unit, fixed expenses increase by $5,000, and the number of units sold decreases by 3%? 4, what is the revised net operating income if the selling price per unit increases by 20%, variable expenses increase by 20 cents per unit, and the number of units sold decreases by 7%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income