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': '12 children were off from the primary school with intense abdominal cramps followed by watery diarrhea 6-10 hours after a bihday pay. The most likely causative organism is: \nSelect and explain. \nA. Rotavirus, B. Enterotoxigenic E.coli, C. Staphylococcal toxin, D. Clostridium perfringens', 'role': 'user'}, {'content': "Answer: D \nExplanation: Clostridium perfringens infection characteristically presents after 8 to 16 hours of consumptions of food material and causes abdominal cramps, followed by diarrhea. Thus all features presented in question are consistent with a diagnosis of Clostridium perfringens infection. Meats, meat products, and gravy are the foods most frequently implicated. Ref: Harrison's Principles of Internal Medicine, 15th Edition, Page 837 ; Food Microbiology By M. R. Adams, M. O. Moss, 2008, Page 209", 'role': 'assistant'}]