Whirly Corporation's contribution format income statement for the most recent month is shown below: Sales (7,400 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 236, see 148, eee 88, see 55,300 $ 33,500 Per Unit $ 32.ee 20.00 $ 12.00 Required: (Consider each case Independently 1. What would be the revised net operating Income per month if the sales volume increases by 50 units? 2. What would be the revised net operating Income per month if the sales volume decreases by 50 units? 3. What would be the revised net operating Income per month if the sales volume is 6,400 units? 1. Revised net operating income 2. Revised not operating income 3. Revised net operating income