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: Medicine
A patient in the post opreative ICU with intravenous catheter developed spikes of fever.The causativeorvanism is - 
Select and explain. 
A. E. Coli, B. Coagulase negative staphylococci, C. Pseudomonas, D. Streptococcus agalactiae
B: Coagulase negative staphylococci
Answer: B: Coagulase negative staphylococci 
Explanation: None