Bottleneck Profit Product K has a unit contribution margin of $120. Product L has a unit contribution margin of $100. Product K requires five furnace hours, while Product L requires four furnace hours. Determine the unit contribution margin per production bottleneck hour for each product, assuming the furnace is a bottleneck constraint. Product K Product L Product L is the most profitable in using bottleneck resources. Feedback Check My Work K For each product, determine the unit contribution margin per bottleneck hour by dividing the unit contribution margin by the furnace hours per unit.