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
A child after consuming food in a party complains of diarrhea within 1-5 hours. The diagnosis is - 
Select and explain. 
A. S. aureus, B. Streptococcus, C. Clostridium perfringens, D. Clostridium botulinum
A: S. aureus
Answer: A: S. aureus 
Explanation: Staphylococcal food poisoning occurs within 2-6 hrs after consuming contaminated food containing the preformed toxin.
The only other cause of food poisoning presenting within 4-6 hrs is Bacillus cereus.