An Enterprise decides to implement Authentication Proxy for per-user authentication for home offices. Each home office also supports an IP Phone. What should you do?（）

• A、Configure Access Control Lists to ensure Voice over IP traffic is checked by Auth Proxy.
• B、Configure pNAT to ensure Voice over IP packets are properly translated.
• C、Configure IOS firewall to permit RTP port numbers through the firewall via VPN. 
• D、Configure Access Control Lists to allow Voice over IP traffic to bypass Auth Proxy checking.