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 regarding SIADH except: \nSelect and explain. \nA. Increased level of ADH, B. Urine hypoosmolar, C. Hyponatremia, D. Adequate hydration status', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer is B (Hyposmolar urine): SIADH is characterized by an inappropriately increased urine osmolality (Hyperosmolar urine) in the presence of decreased plasma osmolality.', 'role': 'assistant'}]