How Does an Organizational Chart Reflect an Organization's Communication Network

How does an organizational chart reflect an organization's communication network?

A) It reflects the communication networks that are independent of the company's formal reporting relationships.
B) It reflects the formal pathways in which communication takes place.
C) It summarizes informal relationships while a communication network is more formal.
D) It summarizes formal relationships that do not exist in communication networks.
E) An organizational chart and communication network each reflect the totality of communication in an organization.