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
[{'content': 'In case of unconscious patient spinal injury is assessed by \nSelect and explain. \nA. Absence of response to painful stimulus, B. Absence of deep reflexes, C. Abdominal respiration, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Absence of response to painful stimulus > B i.e. Absence of deep tendon reflexes > C i.e. Abdominal respiration', 'role': 'assistant'}]