This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'A man presents with history of hemetemesis of about 500 ml of blood. On examination, spleen is palpable 5 cms below the left costal margin. The most likely diagnosis is: \nSelect and explain. \nA. Poal Hypeension, B. Gastric ulcer, C. Drug induced, D. Mallory Weiss Tear', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Poal Hypeension) Hemetemesis in a patient with palpable splenomegaly suggests a diagnosis of variceal blood secondary to poal hypeension. Hemetemesis from Gastric ulcer, Mallory Weiss tear and/or drug induced gastritis is not associated with splenomegaly.', 'role': 'assistant'}]