Answer: D
Explanation: D) Products A, B, C, and E are in the maturity stage of the product life cycle. In this phase, sales slow (Product B) as competition makes inroads (Product C). At this point, managers need to concentrate on reducing costs and instituting efficiencies to maintain the product's profitability (Product A). Sometimes they can extend the life of the product by tinkering with its various features (Product E). Product D is in the introduction stage. This is the stage that is heavy on startup costs for production, marketing, and distribution. Managers have to concentrate on building inventory and staff without loss of quality (Product D).