What is the purpose of the pre-defined exclusions included with SmartEvent R71?

What is the purpose of the pre-defined exclusions included with SmartEvent R71?

A.
To give samples of how to write your own exclusion.

B.
To avoid incorrect event generation by the default IPS event definition; a scenario that may occur in deployments that include Security Gateways of versions prior to R71.

C.
To allow SmartEvent R71 to function properly with all other R71 release devices.

D.
As a base for starting and building exclusions.