You are designing a strategy to optimize the DNS name resolution for the satellite offices that connect to the branch offices by using ISDN lines. What should you do?（）

• A、Use caching-only DNS servers at these satellite offices.
• B、Configure a Hosts file for all client computers at these satellite offices.
• C、Configure a DNS server to use WINS forward lookup at these satellite offices.
• D、Place a DNS server with secondary zones of all domains at these satellite offices.