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': 'In Autoregulation of hormone? \nSelect and explain. \nA. A hormone inhibits its own secretion directly, B. A hormone inhibits its own secretion by inhibiting regulatory hormone, C. Nervous system inhibits release of hormone, D. All of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., A hormone inhibits its own secretion by inhibiting regulatory hormone.Feedback control (Autoregulation):The process of inhibiting or stimulating the first step by the final step product in a hormonal reaction pathway, is called feedback regulation.", 'role': 'assistant'}]