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
45 years old Ramlal has intra abdominal sepsis. The causative organism was found to be vancomycin, gentamycin and amplicillin resistant. It grows well in presence of 6.5% NaCl and arginine. Bile esculin hydrolysis is positive. Which of the following is this organsim ? 
Select and explain. 
A. Strept. agalactae, B. Enterococcus fecalis, C. Streptococcus bovis, D. Streptococcus pneumoneae
B: Enterococcus fecalis
Answer: B: Enterococcus fecalis 
Explanation: Growth in 6.5% NaCl is characteristic of Enterococci (E. faecalis, E. faecium, E. durans).