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
The single most important laboratory test for determining the virulence of staphylococci is 
Select and explain. 
A. Mannitol fermentation, B. Hemolysis of sheep erythrocytes, C. Detection of coagulase, D. The catalase test
C: Detection of coagulase
Answer: C: Detection of coagulase 
Explanation: None