This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
[{'content': 'A patient died after a blunt trauma to chest. Most common cause of death in blunt trauma to chest is: \nSelect and explain. \nA. Esophageal rupture, B. Tracheobronchial rupture, C. Pulmonary laceration, D. Pneumothorax', 'role': 'user'}, {'content': 'Answer: B \nExplanation: THORACIC INJURIES MC cause of moality in blunt thoracic trauma: Tracheobronchial injuries MC Cause of moality in penetrating thoracic trauma: Hemothorax (Secondary to pulmonary laceration) MC thoracic injuries: Chest wall injuries', 'role': 'assistant'}]