Carver Packing Company reports total contribution margin of $69,440 and pretax net income of $24,800 for the current month. In the next month, the company expects sales volume to increase by 5%. The degree of operating leverage and the expected percent change in income, respectively, are: Multiple Choice 25 and 13% 0.36 and 5% 0.36 and 2.5% 23 and 5% 28 and 14%