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': 'Following clostridia are saccharolytic except ? \nSelect and explain. \nA. Welchii, B. Sporogenes, C. Septicum, D. Oedematiens', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Sporogenes . Clostridia may break down carbohydrate for energy (sacchrolytic) or break down protein for energy (proteolytic) or both. Different clostridia have different pattern :- . Both proteolytic and saccharolytic - Predominating proteolytic --> CL sporogenes, Cl botulinum A .B.F., Cl. bifermentans, Cl. histolyticum - Predominating saccharolytic Cl. perfringens, Cl. novyi, CL septicum, Cl. difficile. . Only proteolytic (not saccharolytic) --> Cl. tetani . Only saccharolytic (not proteolytic) --> Cl. botulinum C.D.E. . Neither proteolytic nor saccharolytic --> Cl. cochlearum.", 'role': 'assistant'}]