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': 'Insulin secretion is inhibited by: \nSelect and explain. \nA. Secretin, B. Epinephrine, C. Growth hormone, D. Gastrin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Insulin secretion is inhibited by both epinephrine and norepinephrine. Ref: Review of Medical Physiology By Willaim Ganong, 22nd Edition, Page 345.', 'role': 'assistant'}]