This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pharmacology
Which of the following agents are useful in medical treatment variceal bleeding? 
Select and explain. 
A. Octreotide, B. Pantoprazole, C. Somatotropin, D. Dexamethasone
A: Octreotide
Answer: A: Octreotide 
Explanation: Management if variceal bleeding: A.prevention of re bleeding Non selective beta blockers Variceal band ligation B.Management of acute bleed Stabilize with fluids and blood Octreotide Vasopressin Balloon tamponade: 1.sengstaken-blackmore 2.minnesota tube Varriceal ligation Variceal sclerotherapy.( ref Harrison principals of medicine 17/e p1977)