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': 'Organism associated with fish consumption that also cause carcinoma gallbladder \nSelect and explain. \nA. Clonorchis sinensis, B. Gnathostoma, C. Strongyloides cantonensis, D. H. dimunata', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Clonorchis sinensis', 'role': 'assistant'}]