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: Microbiology
[{'content': 'Cercariae are infective form of- \nSelect and explain. \nA. S. haematobium, B. P. westermani, C. F. hepatica, D. T. solium', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Metacercaria larva are the infective form for all the trematodes, expect Schistosoma where cercarial larva are the\xa0infective form.', 'role': 'assistant'}]