要禁止内网中IP地址为198.168.46.8的PC机访问外网，正确的ACL规则是______ A．access-list 1 permit ip 192.168.46.0 0.0.0.255 any access-list 1 deny ip host 198.168.46.8 any B．acces-list 1 permit ip host 198.168.46.8 any access-list 1 deny ip 192.168.46.0 0.0.0.255 any C．access-list 1 deny ip 192.168.46.0 0.0.0.255 any access-list l permit ip host 198.168.46.8 any D．access-list 1 deny ip host 198.168.46.8 any access-list 1 permit ip 192.168.46.0 0.0.0.255 any