A firewall engineer creates a new App-ID report under Monitor > Reports > Application Reports > New Applications to monitor new applications on the network and better assess any Security policy updates the engineer might want to make.
How does the firewall identify the New App-ID characteristic?
The firewall identifies the New App-ID characteristic by matching to the New App-IDs in the most recently installed content releases. This means that as soon as a new content release is installed, the firewall will update and match only the new App-IDs that come with that specific release version.
https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-admin/app-id/manage-new-app-ids-introduced-in-content-releases/monitor-new-app-ids
"...the New App-ID characteristic always matches to only the new App-IDs in the most recently installed content releases. When a new content release is installed, the new App-ID characteristic automatically begins to match only to the new App-IDs in that content release version." https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-admin/app-id/manage-new-app-ids-introduced-in-content-releases/monitor-new-app-ids
B is correct
This was on the Exam Sep 23. Answer is B
New App-ID characteristic always matches to only the new App-IDs in the most recently installed content releases. https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-admin/app-id/manage-new-app-ids-introduced-in-content-releases/monitor-new-app-ids