Answer:
D) generates the highest contribution margin per stamping machine hour
Step-by-step explanation:
Since the stamping machine is Kinsi's constrained resource, or bottleneck resource, in order to maximize its profit, the company should manufacture the products that maximize the utility of the stamping machine. The product that maximize the utility are the one that have the highest contribution margin. Therefore Kinsi must produce the products that have the highest contribution margin per stamping machine hour.