0.4. Using a constraint Resource Waqar'runis Sport Inc. makes h'gbend hard-sided luggage for sports equipment. Data conterning three of the company's most popular models appear below. Selling price per unit ..................... Rstt moon Variable cost per unit ..................... Plastic injection molding machine processing time required to produce one unit ......... 4 minutes 5 minutes 2 minutes Pounds of plastic pellets per unit ......... 5 pounds 5 pounds 5 pounds Required: a. the total time available on the plastic injection molding madline the constraint in the production process. Whirl: product would be the most protable use of this constraint? Which product would be the least profitable use of this constraint? b. A severe shortage of plastic pellets has required the company to cut back its production so much that the plastic injection molding machine is no longer the bottleneck. Instead, the constraint is the total available pounds of plastic pellets. Which product would be the most protable use ofthis consIIaint? Whirl] product would be the least profitable use of this constraint? c. Which product has the largest unit contribution margin? W'lw wouldn't this product be the most protable use ofthe constrained resource in either case