单项选择题

A. one primary zone
B. two primary zones
C. one Active Directory-integrated zone that has the replication scope set to all DNS servers in the forest.
D. two Active Directory-integrated zones that have the replication scopes set to all DNS servers in the forest.
E. one Active Directory-integrated zone that has the replication scope set to all domain controllers in the domain.
F. two Active Directory-integrated zones that have the replication scopes set to all domain controllers in the domain.