This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
Severely injured patient with spinal fracture and unconsciousness first thing to be done is - 
Select and explain. 
A. GCS scoring, B. Spinal stabilization by cervical collar, C. Mannitol drip to decrease ICT, D. Airway maintenance
D: Airway maintenance
Answer: D: Airway maintenance 
Explanation: Airway management is the first priority in trauma patients.