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
Following hormones are produced by endocrinal pa of pancreas: 
Select and explain. 
A. Insulin, B. Somatostatin, C. Glucagons, D. All
D: All
Answer: D: All 
Explanation: A i.e. Insulin; B i.e. Somatostatin; C i.e. Glucagon