This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Surgery
What is the use of this tube? 
Select and explain. 
A. Arrest bleeding in Mallory Weiss tear, B. Arrest bleeding in Esophageal varices, C. Arrest bleeding in Dieulafoys lesion, D. Stop bleeding from Aorta enteric fistula
B: Arrest bleeding in Esophageal varices
Answer: B: Arrest bleeding in Esophageal varices 
Explanation: Ans. (b) Arrest bleeding from Esophageal varices* This is Sengstaken Blakemore tube* Modified tube will have 4 lumen.* Unused times this tube must be kept in freezer compartment.