Which three statements are true regarding VM-Series plugin upgrades?

The first statement about VM-Series plugin upgrades being upgradable manually independent of PAN-OS is accurate because the VM-Series firewall plugins can be upgraded without necessitating an upgrade to the associated PAN-OS. This flexibility allows organizations to keep the firewall plugins updated with the latest features and security enhancements, even if they choose to delay the PAN-OS upgrades for various operational reasons.

In the context of the other statements, it is essential to recognize that the second statement regarding the requirement of a PAN-OS upgrade is not correct; users have the ability to update the VM-Series plugins on their own timeline. Also, while the third statement notes that these plugins can indeed be managed centrally through Panorama, there is no requirement for this central management to be tied to a PAN-OS upgrade. Lastly, the fourth statement regarding version compatibility is misleading, as not every version of a plugin is guaranteed to work with every PAN-OS version; compatibility must be verified with the release notes for both the plugin and the PAN-OS version to ensure they function correctly together. Hence, the true nature of how the VM-Series plugin upgrades work aligns with the first statement provided.