You have a server that runs Windows Server 2003 Service Pack 2 (SP2). The server has the Routing and Remote Access service enabled and is configured as a network address translation (NAT) router. You need to view a list of the current sessions on the Routing and Remote Access server and the private and public IP addresses and ports that are being used. What should you do?（）

• A、Run Nbtstat –S. 
• B、Run Netstat –ano. 
• C、From the Routing and Remote Access snap-in, right-click NAT/Basic Firewall and select Export List. 
• D、From the Routing and Remote access snap-in, right-click the interface connected to the Internet and click Show Mappings.