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': 'Food poisoning with incubation period of 1-6 hours is most probably caused by: March 2013 \nSelect and explain. \nA. Streptococcus viridans, B. Staphylococcus aureus, C. Salmonella typhi, D. H. pylori', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. Staphylococus aureus', 'role': 'assistant'}]