This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, 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: Epinephrine (also known as adrenaline or adrenaline) is a hormone and a neurotransmitter. Epinephrine has many functions in the body, regulating hea rate, blood vessel and air passage diameters, and metabolic shifts; epinephrine release is a crucial component of the fight-or-flight response of the sympathetic nervous system.Ref: Ganong&;s review of medical physiology; 24th edition', 'role': 'assistant'}]