This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Asphyxia, Subject name: Forensic Medicine
[{'content': 'Pressure upon the chest leading to a so of mechanical fixation of chest and thereby preventing respiratory movements seen in \nSelect and explain. \nA. Gagging, B. Choking, C. Smothering, D. Traumatic asphyxia', 'role': 'user'}, {'content': "Answer: D \nExplanation: Traumatic asphyxia the term 'traumatic asphyxia' or 'crush asphyxia' is applied where there is pressure upon chest leading to a so of mechanical fixation of chest and thereby preventing respiratory movements. Eg: burial under the rubble of a collapsed building. Crushing under an automobile. Etc Ref: TEXTBOOK OF FORENSIC MEDICINE AND TOXICOLOGY KRISHNAN VIJ PAGE 118", 'role': 'assistant'}]