Which method will dynamically register tags on the Palo Alto Networks NGFW?

Which method will dynamically register tags on the Palo Alto Networks NGFW?
A . Restful API or the VMware API on the firewall or on theUser.-D agent or the ready -only domain controller
B. XML API or the VMware API on the firewall on the User-ID agent or the CLI
C. Restful API or the VMware API on the firewall or on the User-ID Agent
D. XML- API or lite VM Monitoring agent on the NGFW oron the User- ID agent

Answer: D