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
Insulin secretion is inhibited by: 
Select and explain. 
A. Secretin, B. Epinephrine, C. Growth hormone, D. Gastrin
B: Epinephrine
Answer: B: Epinephrine 
Explanation: Insulin secretion is inhibited by both epinephrine and norepinephrine. Ref: Review of Medical Physiology By Willaim Ganong, 22nd Edition, Page 345.