The suggested answer is A.
The correct order for processing when configuring NAT rules and security policies is: destination NAT, policy lookup, source NAT, and then static NAT. Destination NAT needs to occur before policy lookup because the destination address might be changed before determining which policy applies. After policy lookup, source NAT is applied as it generally involves modifying the packet before it leaves the router. Static NAT, which typically involves a one-to-one mapping, occurs last.