Otto-Light is a desk light that lets hobbyists match colour swatches accurately without going outside. It's like convenient, natural sunlight inside. The lights have high marketing costs, are sold with high dealer margins, and have high production costs. Ads for the product aim at educating craftspeople who work with fabrics and paints about the benefits of the Otto-Light. In which stage of the product life cycle is the light?

a. saturation
b. decline
c. growth
d. introductory

Ans: d. introductory