Outdoor Luggage Inc. makes high-end hard-sided luggage for sports equipment. Data concerning three of the company's most popular models appear below. Ski Golf Fishing Guard Guard Guard $280 Selling price per unit $330 $175 Variable cost per unit S140 $210 S115 Plastic injection molding machine processing time required to produce one unit 4 minutes 12 minutes 9 minutes Pounds of plastic pellets per unit 12 pounds 15 pounds 13 pounds Required a. The total time available on the plastic injection molding 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 Guard Golf Guard hing Guard Selling price per unit Variable cost per unit Contribution margin per unit minutes minutes minutes Plastic injection molding machine processing time required to produce one unit per minute per minute per minute Contribution margin per unit of the constrained resource 1b. Which product would be the most profitable use of this constraint? O Ski Guard O Fishing Guard O Golf Guard 1c. Which product would be the least profitable use of this constraint? O Ski Guard O Fishing Guard O Golf Guard