After you configure the Loopback0 interface, which command can you enter to verify the status of the interface and determine whether fast switching is enabled?

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After you configure the Loopback0 interface, which command can you enter to verify the status of the interface and determine whether fast switching is enabled?
A . Router#show ip interface loopback 0
B . Router#show run
C . Router#show interface loopback 0
D . Router#show ip interface brief

Answer: A