Which statement about this configuration is true?

Refer to the exhibit.

Router 1 was experiencing a DDoS attack that was traced to interface gigabitethernet0/1.

Which statement about this configuration is true?
A . Router 1 accepts all traffic that ingresses and egresses interface gigabitethernet0/1.
B . Router 1 drops all traffic that ingresses interface gigabitethernet0/1 that has a FIB entry that exits a different interface.
C . Router 1 accepts source addresses that have a match in the FIB that indicates it is reachable through a real interface.
D . Router 1 accepts source addresses on interface gigabitethernet0/1 that are private addresses.

Answer: C

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx-os/security/configuration/guide/sec_nx-os-cfg/sec_urpf.html