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': 'Kallu, a 22 year old male had an outing with his friends and developed fever of 38.50C, diarrhoea, and vomiting following eating chicken salad, 24 hours back. Two of his friends developed the same symptoms. The diagnosis is - \nSelect and explain. \nA. Salmonella enteritis, B. Bacillus cereus, C. S. aureus, D. Vibrio cholerae', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]