Which action disables Zero Touch Provisioning (ZTP) functionality on a ZTP firewall during the onboarding process?

Which action disables Zero Touch Provisioning (ZTP) functionality on a ZTP firewall during the onboarding process?
A . performing a local firewall commit
B . removing the firewall as a managed device in Panorama
C . performing a factory reset of the firewall
D . removing the Panorama serial number from the ZTP service

Answer: A

Explanation:

https://docs.paloaltonetworks.com/panorama/10-0/panorama-admin/manage-firewalls/set-up-zero-touch-provisioning/add-ztp-firewalls-to-panorama/add-a-ztp-firewall-to-panorama.html#id182211ac-a31c-4122-a11f-19450ec9ca4e