Which of the following statements best describes the concept of the value chain?

Which of the following statements best describes the concept of the value chain?

A.
It defines relations between the supply between distribution chain through the core processes of an organization.

B.
It describes connections and relations between the observed organization and its suppliers, channel partners, and customers.

C.
It helps to explain how a company operates and which activities create value.

D.
It defines methods on how supporting activities of an organization can bring increased profit margins.