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': 'A group of friends had a party together, After 4 hours, few of them had diarrhoea and vomiting. Organism responsible for food poisoning is : \nSelect and explain. \nA. S-typhi, B. CL.perfringens, C. B.cereus, D. Camp. jejuni', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Incubation period of food poisoning\n1-6 hours - S.auerus and B.cereus\n8-24 hours- clostridium', 'role': 'assistant'}]