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 C
B. Run Netstat Cano.
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.