ABC Corporation's contribution format income statement for the most recent month is shown below: Sales (8,000 units) Variable expenses Total $ 264,000 152,000 Contribution margin Fixed expenses 112,000 55,600 Net operating income $ 56,400 Per Unit $ 33.00 19.00 $ 14.00 Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 100 units? 2. What would be the revised net operating income per month if the sales volume decreases by 100 units? 3. What would be the revised net operating income per month if the sales volume is 7,000 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income