You are the network consultant from Cisco.com.Your customer has eight sites and will add in thefuture. Branch site to branch site traffic is approaching 30 percent. The customer’s goals are to make iteasier to add branch sites in the future and to reduce traffic through the hub. Which VPN topology should you recommend？（）

• A、 Easy VPN
• B、 IPsec GRE tunneling
• C、 Virtual Tunnel Interfaces
• D、 Dynamic Multipoint VPN