Contribution Margin Ferrante Company sells 33,000 units at $43 per unit. Variable costs are $33.11 per unit, and fixed costs are $189,300. 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