You are designing DNS implemetation Strategy for the new Infrastruce.  Which two actions should you perform？（）

• A、 Create a Stub Zone in each domain of the root zone.
• B、 Create a _msdcs subdomain in a new zone on the root domain.
• C、 Replicate the _msdcs subdomain across the roor domain.
• D、 Replicate the _msdcs subdomain to the ForestDNS zone applciation partition.
• E、 Configure a zone transfer of the _msdcs subdomain to secondary zone on all DNS servers in the forest