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': 'Acellular pertusis vaccine contains- \nSelect and explain. \nA. Pertactin, flagillary hemagglutinin, cytotoxin, endotoxin, B. Pertactin, flagillary hemagglutinin, fimbriae, endotoxin, C. Pertactin, cytotoxin, fimbriae, pertusis toxin, D. Flagillary hemagglutinin, pertusis toxin, fimbriae', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]