Cisco路由器执行show access-list命令显示如下一组控制列表信息 Standard IP access list 30 deny 127.0.0.0, wildcard bits 0.255.255.255 deny 172.16.0.0, wildcard bits 0.15.255.255 permit any 根据上述信息，正确的access-list配置是（）

A.Router (config)#access-list 30 deny 127.0.0.0 255.255.255.0 Router (config)#access-list 30 deny 172.16.0.0 255.240.0.0 Router (config)#access-list 30 permit any
B.Router (config-std-nacl)# access-list 30 deny 127.0.0.0 0.255.255.255 Router (config-std-nacl)# access-list 30 deny 172.16.0.0 0.15.255.255 Router (config-std-nacl)# access-list 30 permit any
C.Router (config)#access-list 30 deny 127.0.0.0 0.255.255.255 Router (config)#access-list 30 deny 172.16.0.0 0.15.255.255 Router (config)#access-list 30 permit any
D.Router (config)#access-list 30 deny 127.0.0.0 0.255.255.255 Router (config)#access-list 30 permit any Router (config)#access-list 30 deny 172.16.0.0 0.15.255.255

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参考答案：C

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