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 patient of esophageal varices with liver span of 19cm. Likely causes - \nSelect and explain. \nA. Haemochromatosis, B. Alcoholic liver disease, C. Budd- chiary syndrome, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]