Which backup infrastructure type would describe this process?

Your current backup solution includes a backup server and six tape drives within a tape library.
The routers are connected to the SAN and the servers are zoned on the SAN to see the array.
The server sends a set of commands to the tape routes causing the routers to talk directly to the
volumes and copy them to the tape drives. Which backup infrastructure type would describe this
process?

A.
D2D (disc-to-disk)

B.
3PC (3rd party copy)