Correct Answer: B, DTo support asymmetric routing with redundancy in a Palo Alto Networks firewall setup, two key features are essential. First, HA active/active is necessary as it allows traffic to flow through both firewalls in an asymmetric routing environment while providing redundancy. Second, policy-based forwarding is required to direct traffic based on policies, ensuring that routing decisions can adapt to the asymmetric nature of the network paths. Virtual systems and HA active/passive do not directly address the needs of asymmetric routing with redundancy.