How is FCIP traffic marked with DSCP values?

A.
The Cisco MDS 9000 Series Multilayer Switch marks one DSCP value per FCIP tunnel.

B.
The Cisco MDS 9000 Series Multilayer Switch marks two DSCP values per FCIP tunnel.

C.
The aggregation layer Ethernet switch marks one DSCP value per FCIP tunnel.

D.
The aggregation layer Ethernet switch marks two DSCP values per FCIP tunnel.