Which method is used to scale Cisco Security MARS deployments?

Which method is used to scale Cisco Security MARS deployments?

A.
Migrate from the Gen1 to Gen2 Cisco Security MARS platforms.

B.
Use redundant or duplicated Cisco Security MARS appliances to implement a multi-tier architecture.

C.
Use the Cisco Security MARSsyslog forwarding feature to offload the syslog storage requirement to an external server.

D.
Divide the network into multiple zones,then use the global/local controllers approach.

E.
Centralize all the incomingsyslog messages to a single syslog server, which will then relay all the syslog messages to Cisco Security MARS.