Which signature definition is virtual sensor 0 assigned…

Which signature definition is virtual sensor 0 assigned to use?

A.
rules0

B.
vs0

C.
sig0

D.
ad0

E.
ad1

F.
sigl

Explanation:
Default signature

http://www.cisco.com/en/US/docs/security/ips/7.0/configuration/guide/idm/idm_signature_defini tions.html
You can create multiple security policies and apply them to individual virtual sensors. A security policy is made up of a signature definition policy, an event action
rules policy, and an anomaly detection policy. Cisco IPS contains a default signature definition policy called sig0, a default event action rules policy called rules0,
and a default anomaly detection policy called ad0. You can assign the default policies to a virtual sensor or you can create new policies.