This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and Reproduction, Subject name: Physiology
Which of the following compound antagonizes the actions of insulin 
Select and explain. 
A. Neuropeptide Y, B. Growth hormone, C. Substance P, D. Vasoactive intestinal peptide
B: Growth hormone
Answer: B: Growth hormone 
Explanation: Ans. (b) Growth hormone(Ref: Ganong, 25th ed/p.434)Growth hormone is a diabetogenic hormone. It causes hyperglycemia. It antagonizes the action of insulin