This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'Hypophostemia is a caused by - \nSelect and explain. \nA. Primary hypothyroidism, B. Primary hyperparathyroidism, C. Primary hypehyroidism, D. Hypoparathyroidism', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref - journal on Hypophosphatemia , England journal of medicine', 'role': 'assistant'}]