This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plastic Surgery and Skin Lesions, Subject name: Surgery
[{'content': 'Operation theatre fire is most commonly due to:- \nSelect and explain. \nA. Argon beam coagulation, B. Lasers, C. Fibre optic illumination, D. Electrosurgical equipment', 'role': 'user'}, {'content': "Answer: D \nExplanation: ECRI's analysis of case repos show that the most common ignition sources are electrosurgical instruments (68%) & lasers(13%). Most common fire location is airway(35%), head or face(28%), & elsewhere on or inside the patient (38%). An oxygen enriched atmostphere was a contribution factor in (74%) of all cases.", 'role': 'assistant'}]