Which condition must exist in this scenario?

You are planning to update your running switch environment. You need to determine if certain conditions exist before the FASTPATH software and reference configuration file (RCF) on a NetApp CN16xx cluster switch can be installed.

Which condition must exist in this scenario?
A . You must set the port configuration to default for all ports before running the portcfgdefault portnumber command.
B . The cluster must be a fully functioning cluster (no error log messages or other issues).
C . All ISL ports must be moved to a different switch.
D . You can only update your switch environment within offline windows.

Answer: B