21^st Century Fox Is the New Name for Its Broadcast/cable

21^st Century Fox is the new name for its broadcast/cable TV networks and TV/movie studios.Since most of the shows produced at its TV production unit and many of the movies made at its studio are only televised on its cable TV networks,21^st Century Fox is an example of a(n)

A) corporate vertical marketing system.
B) integrated marketing system.
C) contractual vertical marketing system.
D) corporate horizontal marketing system.
E) contractual horizontal marketing system.