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 70 year old male , known case of chronic renal failure suffers from a pathological fracture of Rt femur, the diagnosis is \nSelect and explain. \nA. Primary Hrperparathyroidism, B. Secondary Hyperparathyroidism, C. Scurvy, D. Vitamin D Resistant rickets', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Secondary HyperparathyroidismIn CRF there is secondary hyperparathyroidism which causes pathological fracture.', 'role': 'assistant'}]