Which three actions does the Cisco IDM custom signature wizard provide? (Choose three.)

A.
selecting the signature engine to use or not to use any signature engine

B.
selecting the Layer 3 or Layer 4 protocol that the sensor will use to match malicious traffic

C.
selecting the attack relevancy rating

D.
selecting the signature threat rating

E.
selecting the scope of matching (for example, single packet)

Explanation:
http://www.cisco.com/en/US/docs/security/ips/6.1/configuration/guide/idm/idm_signature_wizar d.html#wp1655660
Shows A B E and nothing for C or D