When using an egress port scheduler, on which scheduling loop are orphaned queues serviced?

When using an egress port scheduler, on which scheduling loop are orphaned queues serviced?
A . Level 8 within CIR.
B . Level 8 between CIR and PIR.
C . Level 8, once all PIR is serviced.
D . Level 1 within CIR.
E . Level 1 between CIR and PIR.
F . Level 1, once all PIR is serviced.

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Answer: C