Which command implements UnicastRPF IP spoofing protection?

A.
access-list

B.
access-group

C.
ip verify reverse-path interface

D.
tcp verify reverse-path interface

E.
udp verify reverse-path interface

Explanation:

Use the ipverify unicast reverse-path interface command on the input interface on the router at the upstream end of the connection. This feature examines each packet received as input on that interface. If the source IP address does not have a route in the CEF tables that points back to the same interface on which the packet arrived, the router drops the packet.
Reference: Strategies to Protect Against Distributed Denial of Service (DDoS) Attacks