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: Anaesthesia
[{'content': 'In a patient with multiple injuries, first thing to be done is: \nSelect and explain. \nA. Patency of airway, B. Maintenance of B.P, C. Immobilize cervical spine, D. Lateral position with mouth gag', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Patency of airway', 'role': 'assistant'}]