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
Heat stable enterotoxin causing food poisoning is caused by all the following except - 
Select and explain. 
A. Bacillus cereus, B. Yersinia enterocolitica, C. Staphylococcus, D. Clostridium perfringens
D: Clostridium perfringens
Answer: D: Clostridium perfringens 
Explanation: Ans. is 'd' i.e., Clostridium Perfringens Heat labile toxin Heat stable toxins . Clostridium perfringens . Staph aureus . LT of ETEC . Y. enterocolitica (Harrison 15th/e 999) . V. cholerae . ST of ETEC . Diarrheal form of B. cereus . Emetic form of B. cereus (Similar to LT of ETEC) (Similar to staph. enterotoxin)