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
Insulin secretion is inhibited by 
Select and explain. 
A. Secretin, B. Epinephrine, C. Growth hormone, D. Gastrin
B: Epinephrine
Answer: B: Epinephrine 
Explanation: 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