What is the primary function of a Master Blocking Sensor?

What is the primary function of a Master Blocking Sensor?

A.
to serve as the central point of configuration in the Cisco IDM for blocking

B.
to directly communicate the blocking requests that are sent by other sensors

C.
to manage and distribute blocking configurations to other slave sensors

D.
to provide the first line of attack detection and prevention through blocking

E.
to serve as the central point of configuration in the Cisco IDS MC for blocking