This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
Rockall score is used in prognosis of 
Select and explain. 
A. Upper GI bleed, B. Lower GI bleed, C. Hepatic encepholapathy, D. IBD
A: Upper GI bleed
Answer: A: Upper GI bleed 
Explanation: Rockall risk scoring system attempts to identify patients at risk of adverse outcome following acute upper gastrointestinal bleeding. Ref Davidson edition23rd pg ,793