UiPath Orchestrator uses runtime-based licensing to control the concurrent execution capacity available for unattended testing operations.

Option C accurately describes the Testing runtime licensing model.

A Testing runtime represents execution capacity rather than a permanently assigned license for an individual robot. The number of Testing runtimes allocated across online machines determines the maximum number of testing robot executions that can run concurrently.

For example, if an organization allocates two Testing runtimes to one machine and three to another, the total allocated testing capacity is five concurrent execution slots, subject to machine capabilities and execution restrictions.

The organization can distribute runtime allocations among available machines according to testing requirements.

The number of robot identities defined on a machine is not necessarily equal to its runtime allocation. Consequently, counting configured robots does not accurately measure available execution capacity.

Option A incorrectly describes equal distribution of a license pool. Option B assumes fixed licensing per robot identity. Option D incorrectly equates robot definitions with runtime consumption.

Official UiPath Reference(s): Orchestrator User Guide — Licensing; Testing; App Testing; UiPath Overview — Service licensing.