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: Pharmacology
[{'content': 'Therapeutic levels of lithium (in mecill) in a patient of acute mania is: \nSelect and explain. \nA. 0.4–0.8, B. 0.8–1.2, C. 1.2–1.6, D. 1.6–2.0', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]