This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
[{'content': 'The largest trematode infecting masn is - \nSelect and explain. \nA. F. Hepatica, B. F. Buski, C. E. Granulosus, D. Clonorchis sinensis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: large or giant intestinal fluke Largest trematode infecting humans Pig serves as reservoir of infection (refer pgno:127 baveja 3 rd edition)', 'role': 'assistant'}]