What is the Cisco IOS command that is used to prevent the route of the incoming traffic from an unknown network?

A.	switch(config)# interface FastEthernet 0/0 switch(config-if)#ip verify unicast source reachable-via any allow-default
B.	switch(config)# interface FastEthernet 0/0 switch(config-if)#ip verify multicast source reachable-via any allow-default
C.	switch(config)# interface FastEthernet 0/0 switch(config-if)#ip verify unicast destination reachable-via any allow-default
D.	switch(config)# interface FastEthernet 0/0 switch(config-if)#ip verify multicast destination reachable-via any allow-default

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Subject: other abuse explanation mistake

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