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: Surgery
[{'content': 'All of the following may lead to pigment gall stones except - \nSelect and explain. \nA. Chronic Hemolysis, B. Hepatocellular Carcinoma, C. Alcoholic Cirrhosis, D. Biliary tract infection', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Hepatocellular CarcinomaDemographic/genetic factors: Asia, rural settingChronic hemolysisAlcoholic cirrhosisPernicious anemiaChronic biliary tract infection, parasite infections (Escherichia coli, Ascaris lumbricoides, Clonorchis sinensis)Increasing ageIleal disease, ileal resection orblpassCystic fibrosis', 'role': 'assistant'}]