What is the purpose of the Cisco Emergency Responder?

What is the purpose of the Cisco Emergency Responder?

A.
To map phones to the appropriate Public Safety Access Point.

B.
To allocate phone device Ids to the appropriate outgoing trunk.

C.
To map IP addresses to office locations for Safety Service Dispatch.

D.
To map a MAC addresses to its CCM server for table lookup for a quick response to the appropriate cubicle.