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
Necrotizing fasciitis is caused by, all except 
Select and explain. 
A. Staphylococcus aureus, B. Beta haemolytic streptococci, C. Clostridium perfringens, D. Pneumococcus
D: Pneumococcus
Answer: D: Pneumococcus 
Explanation: Ans. is. d. Pneumococcus