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': 'Which of the following statements is true about SIADH: \nSelect and explain. \nA. Hypovolemic Hyponatremia, B. Euvolemic Hyponatremia, C. Hypervolemic Hyponatremia, D. Hypervolemic Hypernatremia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer is B (Euvolemic Hyponatremia): SIADH is characterized by Euvolemic Hyponatremia.', 'role': 'assistant'}]