Outdoor Luggage Inc. makes high-end, hard-sided luggage for sports equipment. Data concerning three of the company's most popular models appear below. Selling price per unit Variable cost per unit Plastic injection moulding machine processing time required per unit Kgs of plastic pellets per unit Ski Golf Guard Guard $300 $300 $130 $150 Fishing Guard $255 $ 75 7 min 5 kg 8 min 6 kg 3 min 15 kg Required: 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? Selling price per unit Variable cost per unit Contribution margin per unit $ Plastic injection molding machine processing time required to produce one unit Contribution margin per unit of the constrained resource Ski Guard 0 $ minutes 0 per minute Golf Guard Fishing Gua 0 $ minutes 0 per minute minute 0 per mir