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: Orthopaedics
[{'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: Severe restrictive chest wall disease reduces pulmonary volumes and predisposes to right ventricular dysfunction (cor pulmonale).\nCardiopulmonary failure may lead to premature death.', 'role': 'assistant'}]