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
Catalase positive coagulase negative beta hemolytic bacteria - 
Select and explain. 
A. Strep pyogens, B. Staph aureus, C. Coagulase negative staph, D. Enterococci
C: Coagulase negative staph
Answer: C: Coagulase negative staph 
Explanation: Staphylococci are catalase positive.