In Value Chain 2.0 the customer and other stakeholders play an important role in how a company does business and markets its products and services. Which activity(s) are part(s) of the "Participative activities" that contribute to a company’s contribution margin?
A. Viral marketing
B. Co-operations
C. Communities of Practice
D. Open inbound logistics
E. Outbound by Customer
F. All of the above
G. None of the above