Comprehensive Explanation:
In ITIL 4, change authority assignment is based on:
* The type of change (standard, normal, or emergency)
* The change model used
Standard changes are pre-authorized, so they do not require a new change authority assignment each time.
Emergency changes require a specific emergency change authority, not the technician.
Changes are never authorized after deployment.
Thus, Option C is the correct ITIL-aligned statement.