This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cirrhosis, Subject name: Medicine
[{'content': 'Which of the following statement is false regarding Sengstaken Blakemore tube? \nSelect and explain. \nA. Used to arrest acute variceal bleed, B. Gastric balloon should be inflated, with 200- 250 mL of air, C. Pressure in the oesophageal balloon is 60 mm Hg., D. Endotracheal intubation prior to tube inseion reduces the risk of pulmonary aspiration', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Sengstaken Blakemore tube: Used to arrest acute variceal bleed Gastric balloon is inflated with 300 mL of air and retracted to the gastric fundus Oesophageal balloon is inflated to a pressure of 40 mmHg Endotracheal intubation prior to tube inseion reduces the risk of pulmonary aspiration', 'role': 'assistant'}]