如下图所示的网络，从安全角度考虑，路由器A拒接从G0/0/1接口收到的OSPF报文、GRE报文、ICMP报文、以下哪些命令不可以实现这 个需求?
A
Acl number 3000
Rule 5 deny gre
Rule 10 deny 89
Rulc15 deny icmp
Interface GigabitEthernet0/0/1
Traffic-filter inbound acl 3000
B
Acl number 2000
Rule 5 deny 47
Rule 10 deny 89
Rule 15 deny 1
Interface GigabitEthernet0/0/1
Traffic-filter inbound acl 2000
C
Acl number 3000
Rule 5 deny 47
Rule 10 deny 89
Rule 15 deny 1
Interface GigabitEthernet0/0/1
Traffic-filter inbound acl 3000
D
Acl number 3000
Rule 5 deny gre
Rule 10 deny ospf
Rule 15 deny icmp
Interface GigabitEthernet0/0/1
Traffic-filter inbound acl 3000
参考答案：ACD
