This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Which of the following is coagulase-negative staphylococcus? 
Select and explain. 
A. Staph. aureus, B. Staph. epidermidis, C. Staph. Intermedius, D. Staph. Hyicus
B: Staph. epidermidis
Answer: B: Staph. epidermidis 
Explanation: Coagulase-positive StaphylococciBesides Staph.aureus, few others are coagulase positive like Staph.intermedius and Staph.hyicusCoagulase-negative StaphylococciStaph.epidermidis; Staph.hemolyticus and Staph.saprophyticusRef: Ananthanarayan; 7th edition; Page no: 200