You are designing a strategy to ensure that VPN users are able to access all internal resources.  What should you do？（）

• A、 Specify a static routing table entry on VPN1 for the Dallas network.
• B、 Specify a static routing table entry on VPN1 for the Seattle network.
• C、 Implement Internet Authentication Service （IAS） on VPN1.
• D、 Define a User Class option for Routing & Remote Access Clients on the DHCP Server.