Which of the following three BGP filtering methods enabled with the neighbor command  will filter BGP prefixes based on the prefix and prefix length？（）

• A、A neighbor distribute - list out command, referencing a standard ACL
• B、A neighbor prefix - list out command
• C、A neighbor filter - list out command
• D、A neighbor distribute - list  out command, referencing an extended ACL
• E、A neighbor route - map out command