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
All of these cause hyperglycemia except: 
Select and explain. 
A. GH, B. Coisol, C. Catecholamines, D. Insulin
D: Insulin
Answer: D: Insulin 
Explanation: D i.e. Insulin