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': 'Oliguric phase of ARF is characterized by A/E \nSelect and explain. \nA. Chest pain, B. Acidosis, C. Hypeension, D. Hypokalemia', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Hypokalemia", 'role': 'assistant'}]