Which two statements are true about Unicast Reverse Path Forwarding Loose Mode？（）

• A、It is used in multihome network scenarios.
• B、It can be used with BGP to mitigate DoS and DDoS.
• C、It does not need to have CEF enabled.
• D、It is enabled via the interface level command ip verify unicast reverse-path.
• E、It cannot be used with "classification" access lists.