What does the 'alarm to arrival' metric measure when a fire department receives a call?

• A. The time from the initial alert to the unit departing the station.
• B. The time from dispatch of the alarm to the unit arriving on the scene.
• C. The time from the unit arriving on the scene to the incident being declared safe.
• D. The time from the call being completed to the unit's return to quarters.

Answer: (C)