What is the Onboard license usage based on?

A.
Each user connected to the provisioning SSID uses 1 Onboard license.
B.
Each user authenticated using the Onboard credential uses 1 Onboard license.
C.
Each user provisioned using the Onboard process uses 1 Onboard license.
D.
Each user that has the OnGuard agent downloaded uses 1 Onboard license.
E.
Each user that downloads the Onboard application to their iOS device uses 1 Onboard
license.