If the Process ticket step is configured to set the status to Pending-Triage, when is the status of the case set to Pending-Triage?

A help desk ticket case type is defined as follows:

If the Process ticket step is configured to set the status to Pending-Triage, when is the status of the case set to Pending-Triage?
A . When the Triage stage completes
B . When the Process ticket step starts
C . When the Process ticket step completes
D . When Verify solution step starts

Answer: B