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
[{'content': 'Most common cause of upper GI bleed is ? \nSelect and explain. \nA. Esophageal varices, B. Gastric erosion, C. Peptic ulcer, D. Mallory weiss tear', 'role': 'user'}, {'content': 'Answer: C \nExplanation: <p>Davidson&;s principles and practice of medicine 22nd edition. *peptic ulcer is the most common cause for upper GI bleed (35- 50%)</p>', 'role': 'assistant'}]