Starbucks Has Introduced the Concept of "Starbucks Idea" Wherein Customers

Multiple Choice

Starbucks has introduced the concept of "Starbucks Idea" wherein customers can make suggestions with regard to the products and services offered by the company.It has online Starbucks Idea Partners who listen to the ideas, ask questions, and tell what the company does.This is an example of:

A) collaboration.
B) a patent.
C) process innovation.
D) open innovation.
E) a social network.