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 person of 60 years age is suffering from myositis ossificans progressive. The usual cause of death would be: \nSelect and explain. \nA. Nutritional deficiency, B. Bed sore, C. Lung disease, D. Septicemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Lung disease', 'role': 'assistant'}]