This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'Gastrointestinal enteritis necroticans is caused by \nSelect and explain. \nA. Clostridium difficale, B. Clostridium perfringens, C. Clostridium botulinum, D. Clostridium Jejuni', 'role': 'user'}, {'content': "Answer: B \nExplanation: Necrotizing enteritis: severe and fatal enteritis. Caused by Clostridium perfringes type C strains produce heat-resistant spores that germinate in intestine producing a beta toxin causing mucosal necrosis. Immunization with type C toxoid has been shown to protect against this condition. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 260", 'role': 'assistant'}]