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
Gasterointestinal enteritis necroticans is caused by - 
Select and explain. 
A. Clostridium difficale, B. Clostridium perfringens, C. Botulinum, D. C. Jejuni
B: Clostridium perfringens
Answer: B: Clostridium perfringens 
Explanation: Ans is 'b' i.e. Cl. perfringens Necrotising enteritis (enteritis necroticans or Pigbel) is caused by Cl. perfringens.