Which of the Following Is True About Networks

Which of the following is true about networks?

A) Networks are neither formal organizations with clearly defined hierarchical structures nor impersonal, decentralized markets.
B) In networks, buyers and sellers share no linkages and rarely interact with each other.
C) In a network, continued interaction among partners leads to competition and rivalry that bring down productivity.
D) Networks represent the economically beneficial short-term relationships the firm undertakes with other business entities.