The Grupthink Vignette from the Text Uses Customer Co-Creation in What

The Grupthink vignette from the text uses customer co-creation in what way?

A) Grupthink emails surveys to competitors to gauge their level of co-creation.
B) Grupthink functions as a feedback community for their own business as well as others.
C) Twice annually,Grupthink holds virtual focus groups to discuss applications for their innovation.
D) Grupthink uses social networking sites such as Facebook,Myspace,and Twitter to obtain feedback.
E) Grupthink sells capabilities to hold virtual meetings where customers are interviewed in regards to their experience with certain products.