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': 'Which of the following drug treatment increases thirst and causes dilute diuresis ? \nSelect and explain. \nA. Phenobarbitone, B. Lithium, C. Chlorpromazine, D. Clozapine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]