通过哪条命令可以查看S6506系统自愈信息（）

A.A.show login

B.B.show username

C.C.show telnet name

D.D.show snmp

A.A.display version av-sdb

B.B.display utm av version

C.C.display av utm version

D.D.display utm version

A.A.show interface brief

B.B.show interface

C.C.show interface vlan

D.D.show vlan id

A.A.show isis datebase

B.B.show isis adj

C.C.show isis circuits

D.D.show isis topology

A.A.show host

B.B.show lacp sys

C.C.show lldp ne

D.D.show lldp e

A.A.show ip route

B.B.show ip protocol routing

C.C.show ip backup route

D.D.show ip backup routevrf

A.A.show ip route

B.B.show ip protocol routing

C.C.show ip backup route

D.D.show ip backup routevrf

A.A.show l2vpn pw-redundancy-group detail

B.B.show l2vpn pw-redundancy-group brief

C.C.show l2vpn pw-redundancy-group summary

D.D.show l2vpn pw-redundancy-group