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: Surgery
In case of unconscious patient spinal injury is assessed by 
Select and explain. 
A. Absence of response to painful stimulus, B. Absence of deep reflexes, C. Abdominal respiration, D. All
D: All
Answer: D: All 
Explanation: A i.e. Absence of response to painful stimulus > B i.e. Absence of deep tendon reflexes > C i.e. Abdominal respiration