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 child after consuming food in a pay complains of diarrhea within 1-5 hours. The diagnosis is ? \nSelect and explain. \nA. S. aureus, B. Streptococcus, C. Clostridium perfringens, D. Clostridium botulinum', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., S. aureus . Staphylococcal food poisoning occurs within 2-6 hrs after consuming contaminated food containing preformed toxin. . The only other cause of food poisoning presenting with in 4-6 hrs is Bacillus cereus.", 'role': 'assistant'}]