Contribution Margin Ferrante Company sells 36,000 units at $21 per unit. Variable costs are $15.12 per unit, and fixed costs are $78,300. Determine (a) the contribution margin ratio, (b) the unit contribution margin, and (c) income from operations. a. Contribution margin ratio (Enter as a whole number.) % b. Unit contribution margin (Round to the nearest cent.) c. Income from operations per unit