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
Leucocidin is produced by: September 2004 
Select and explain. 
A. Streptococcus, B. Staphylococcus, C. Pseudomonas, D. E. Coli
B: Staphylococcus
Answer: B: Staphylococcus 
Explanation: Ans. B i.e. Staphylococcus