Which description is correct with regard to Cisco Security MARS and Cisco IPS signature support?

Which description is correct with regard to Cisco Security MARS and Cisco IPS signature support?

A.
Cisco Security MARS can be configured to automatically download the new Cisco IPS signatures from Cisco.com or from a local web server at specified interval.

B.
When the Local Controller pulls the new IPS signatures from Cisco.com, it will also forward the new IPS signatures to the Global Controller.

C.
Cisco Security MARS supports custom IPS signatures using the dynamic IPS signature update feature.

D.
The dynamic IPS signature update feature is enabled by default.