Which statement is most likely true concerning the official activities and roles of senior managers?

A$.$ Interpersonal roles have repeatedly been identified as the most important for the highest level managers to facilitate organizational success.

B$.$ Each of the roles is equally important for managers at all levels of the organization.

C$.$ The roles of disseminator, negotiator, and liaison are most important for senior managers.

D$.$ Technical, human, and conceptual roles have been associated with the activities of senior management.

E$.$ The leader role is of paramount importance to managers in high$-$level management positions because they need to move the entire organization toward a common goal.