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: Pathology
[{'content': 'The following parasitic infections predispose to malignancies -a) Paragonimus westermaniib) Guinea worm infectionc)  Clonorchiasisd)  Schistosomiasis \nSelect and explain. \nA. ab, B. cd, C. bd, D. ac', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The following two parasites have definitive etiological association with malignancies:\n• Clonorchis sinensis: cholangiocarcinoma\n• Opisthorchis viverrini: cholangiocarcinoma\n• Schistosoma haematobium : squamous cell cancer of urinary bladder\n• Schistosoma japonicum: colorectal cancer', 'role': 'assistant'}]