You are designing a DNS infrastructure to meet the Internet name resolution requirements. What should you do?（）

• A、Create a standard primary zone named “.” on all DNS servers.  
• B、Create an Active Directory-integrated zone named “.” on a DNS server on Los Angeles.  
• C、Configure all DNS servers to use forwarders. Specify the IP address of the DNS server at the local ISP.  
• D、Enable default root hints on all DNS servers.
• E、Disable recursion on all DNS servers.