Which statement about messages in the CAD system is true?

The statement that all messages are recorded in the CAD (Computer-Aided Dispatch) system is true because accurate records of all communications are critical for operational integrity, accountability, and future reference. This ensures that there is a complete log of all dispatch activities, which can be essential for audits, legal considerations, and evaluating response efforts. The ability to track all messages allows for effective monitoring of operations and serves as an important tool for assessing performance and investigating incidents when necessary. This comprehensive recording feature is a foundational aspect of CAD systems, ensuring transparency and reliability in emergency response management.