Which Cisco IOS feature can be used to defend against spoofing attacks?

Which Cisco IOS feature can be used to defend against spoofing attacks?

A.
Cisco IOS Firewall (CBAC)

B.
lock-and-key ACL and/or reflexive ACL

C.
IP Source Guard and/or Unicast RPF

D.
TCP Intercept

E.
Cisco IOS IPS

F.
Auth-Proxy

Explanation: