Kinsi Corporation manufactures five different products. All five of these products must pass through a stamping machine in its fabrication department. This machine is Kinsi's constrained resource. Kinsi would make the most profit if it produces the product that:
a) uses the lowest number of stamping machine hours.
b) generates the highest contribution margin per unit.
c) generates the highest contribution margin ratio.
d) generates the highest contribution margin per stamping machine hour.