Which statement is TRUE of anti-spoofing?

The statement that is TRUE of anti-spoofing is that it is BEST Practice to have anti-spoofing groups in sync with the routing table. Anti-spoofing prevents attackers from sending packets with a false source IP address. Anti-spoofing groups define which IP addresses are expected on each interface of the Security Gateway. If the routing table changes, the anti-spoofing groups should be updated accordingly34. References: Check Point R81 ClusterXL Administration Guide, Network Defined by Routes: Anti-Spoofing