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.