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: Medicine
[{'content': 'All are true about Diabetes insipidus except? \nSelect and explain. \nA. Low urine osmolality, B. Dilutional Hyponatremia, C. Water deprivation test is used for diagnosis, D. Polyuria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Dilutional HyponatremiaIn diabetes insipidus, the serum osmolality is increased with inappropriately low urine osmolality.There is polyuria, as ADH deficienry causes excessive water loss in urine.', 'role': 'assistant'}]