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': "A patient comes to the emergency with Ludwig's angina. Which of the following is done first? \nSelect and explain. \nA. Incision and drainage, B. Antibiotic and I.V. fluid infusion, C. Fiberoptic nasotracheal intubation/tracheostomy under local anesthesia, D. Tracheostomy under General Anesthesia", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]