ASo the call can be re-established if it disconnects
BBecause ANI is never displayed on 911 lines
CTo bill the caller for the service
DBecause phone numbers are required by FCC for arrest
✓ Correct answer: A. So the call can be re-established if it disconnectsConfirming the callback number ensures the call taker can reconnect if the line drops, especially since the caller may be calling on behalf of someone else or from a different line than displayed.
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