Outdoor Luggage Inc. makes high$-$end, hard$-$sided luggage for sports equipment. Data concerning three of the companys most popular models appear below. SkiGuardGolfGuardFishingGuardSelling price per unit$$310$ $$330$ $$275$ Variable cost per unit$$150$ $$150$ $$85$ Plastic injection moulding machineprocessing time required per unit $8$min $15$min $5$minKgs of plastic pellets per unit $7$kg $9$kg $10$kgRequired:$1-$a$.$ The total time available on the plastic injection moulding machine is the constraint in the production process. What is the contribution margin per unit of the constrained resources for Ski Guard, Golf Guard and Fishing Guard?Ski GuardGolf GuardFishing GuardSelling price per unitVariable cost per unitContribution margin per unit$$0$$$0$$$0$Plastic injection molding machine processing time required to produce one unitminutesminutesminutesContribution margin per unit of the constrained resource$0$per minute$0$per minute$0$per minute$1-$b$.$ Which product would be the most profitable use of this constraint?