This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'Site of central of circadian rhythm is- \nSelect and explain. \nA. Supraoptic nucleus, B. Paraventricular nucleus, C. Suprachiasmatic nucleus, D. Premamillary nucleus', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Suprachiasmatic nucleus * Suprachiasmatic nucleus of hypothalamus regulates circadian rhythms.", 'role': 'assistant'}]