The Juicy Couture Brand Started Out as a Designer T-Shirt

The Juicy Couture brand started out as a designer t-shirt company and has rapidly expanded into casual wear, dog wear, kids clothing, yoga attire, and kids' accessories. It even combines marketing efforts with the upscale Maclaren baby stroller brand to offer a Juicy stroller. What is this an example of?

A) Family life cycle concept
B) Age
C) Marital status
D) Composite families
E) Influence