This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thermal injury, Subject name: Forensic Medicine
[{'content': 'Presence of soot in air passages indicate \nSelect and explain. \nA. Antemoem burns, B. Postmoem burns, C. Antemoem hanging, D. Postmoem hanging', 'role': 'user'}, {'content': 'Answer: A \nExplanation: presence of smoke in air passages presence of greyish black or black amorphous material embedded or adherent to the mucosa of larynx, trachea and bronchi indicates that the victim inhaled smoke and hence was breathing during the fire. Ref: TEXTBOOK OF FORENSIC MEDICINE AND TOXICOLOGY KRISHNAN VIJ FIFTH EDITION PAGE 166', 'role': 'assistant'}]