Which setting should be change so that all are used simultaneously?

A customer wants a technology refresh of their Dell EMC Networker environment. They want the ability to backup to disk devices. In addition, they want to write all backup-to-disk devices with eight save sets simultaneously. After reviewing the current environment, you discover that only two drives are used.

Which setting should be change so that all are used simultaneously?
A . Target sessions
B . Devices parallelism
C . Max session
D . Client parallelism

Answer: C