In A(n)____________,all Stages in the Channel Are Under Single Ownership,while

In a(n) ____________,all stages in the channel are under single ownership,while in a(n) ___________,channel members sign contracts agreeing to specific duties and rewards.

A) contractual vertical marketing system; corporate vertical marketing system
B) intensive distribution system; exclusive distribution system
C) administrative vertical marketing system; corporate vertical marketing system
D) exclusive distribution system; selective distribution system
E) corporate vertical marketing system; contractual vertical marketing system