Your network consists of an Active Directory forest that contains two domains. All servers run WindowsServer 2008. All domain controllers are configured as DNS Servers. You have a standard primary zone for dev.contoso.com that is stored on a member server. You need to ensure that all domain controllers can resolve names from the dev.contoso.com zone. What should you do（）

• A、On the member server， create a stub zone.
• B、On the memeber server， create a NS record for each domain controller.
• C、On one domain controller， create a conditional forwarder. Configure the conditional forwarder to replicate to all DNS servers in the forest.
• D、On one domain controller， create a conditional forwarder. Configure the conditional forwarder to replicate to all DNS servers in the domain.