Which parameter can be changed so that the optimal amount of save sets is sent to one tape drive before using the next drive?

An EMC NetWorker customer has one tape library with two tape drives. The customer has determined that 10 save sets, running in parallel, will optimize the throughput to the individual tape drives.

Which parameter can be changed so that the optimal amount of save sets is sent to one tape drive before using the next drive?
A . Target sessions
B . Client parallelism
C . Server parallelism
D . Group parallelism

Answer: A