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: Physiology
[{'content': 'Injection of hypertonic saline in which region of hypothalamus produces intense thirst \nSelect and explain. \nA. Posterior region, B. Paraventricular, C. Preoptic, D. Supraoptic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The thirst centre is in lateral hypothalamus. Median preoptic nucleus acts as an osmoreceptor.', 'role': 'assistant'}]