Certkiller has five different geographic locations, each with their own PSTN connection.
How do you ensure you route 911 calls to the local PSTN?

A.
You place each PSTN in the local dialing transform.

B.
You use 911 EXISTS in the dialing pattern call routing.

C.
911 is automatically routed to local PSTN. No configuration is required.

D.
You place the emergency numbers in separate partitions for each geographic location.