单项选择题

A.On DC1 and DC2, open Event Viewer and review the DNS server log.
B.On DC1, open the DNS snap-in. From the properties of the contoso.com zone, review the Zone Transfer settings.
C.On DC1 and DC2, open the DNS snap-in. From the properties of the contoso.com zone, review the Monitoring settings.
D.From Active Directory Replication Monitor, connect to DC1. Under the DC=DomainDnsZones,DC=contoso,DC=com directory partition, review the status of Default-First-Site\DC2.