This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Microbiology
Food poisoning is seen with 
Select and explain. 
A. Staph aureus, B. Staph. epidermidis, C. Strep. pyogenes, D. Staph saprophyticus
A: Staph aureus
Answer: A: Staph aureus 
Explanation: Enterotoxin is responsible for the manifestations of staphylococcal food poisoning - nausea, vomiting, and diarrhea 2-6 hour after consuming food contaminated by the preformed toxin. The toxin is a relatively heated stable, resisting 100deg C for 10 to 40 minutes depending on the concentration of toxin and nature of the medium. Ref: Ananthanarayan and Paniker&;s Textbook of Microbiology, 9th edition; pg no: 202