Which FRF type should be used when a PVC is not carrying voice, but is sharing the link with other PVCs that are carrying voice?

Which FRF type should be used when a PVC is not carrying voice, but is sharing the link with other PVCs that are carrying voice?

A.
FRF. 11 Annex C

B.
FRF. 11

C.
FRF. 12

D.
Cisco Proprietary

E.
FRF.9