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
Gastrointestinal enteritis necroticans is caused by 
Select and explain. 
A. Clostridium difficale, B. Clostridium perfringens, C. Clostridium botulinum, D. Clostridium Jejuni
B: Clostridium perfringens
Answer: B: Clostridium perfringens 
Explanation: 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