Which job type goes active next?

A NetBackup Master Server has commenced writing four long-running duplication jobs on an AdvancedDisk disk pool. The value of Maximum concurrent jobs for the storage unit and Limit I/O streams for the disk pool are both set to 4.

There are 35 jobs queued on the Master Server that require this disk pool:

5 replication jobs with priority 9999

10 backup jobs with priority 999

20 duplication jobs with priority 99

Two restore jobs that require this disk pool are then submitted with default priority.

Which job type goes active next?
A . Backup
B . Duplication
C . Replication
D . Restore