Which process is being described here?

When this particular process is configured external to Tableau Server, you cannot use the tsm maintenance backup command to backup Tableau Server data .

Which process is being described here?
A . File Store
B . Cache Server
C . Cluster Controller
D . TSM Controller

Answer: A

Explanation:

Link to Tableau Server documentation:

https://help.tableau.com/current/server-linux/en-us/backup_restore.htm