LED (Light-Emitting Diode)light Bulbs from Marketers Such as the Cree

LED (light-emitting diode) light bulbs from marketers such as the Cree LED light bulb shown above,have been available for only a few years in low lighting levels (lumens) ,are now coming to the marketplace.They are designed to replace incandescent and even compact fluorescent light bulbs,in part because of a federal law that phases out incandescent light bulbs in favor of more energy efficient ones.LED bulbs,which today can cost about $10 to $15 for a 60-watt bulb,will last up to 20 years.In what stage of the product life cycle is this product?

A) growth stage
B) decline stage
C) accelerated development stage
D) introduction stage
E) maturity stage