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
[{'content': 'Novobiocin susceptible Staphylococcus is \nSelect and explain. \nA. Staphylococcus aureus, B. Staphylococcus epidermidis, C. Staphylococcus hemolyticus, D. Staphylococcus saprophyticus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Coagulase-negative staphylococci (CoNS) are among those organisms that have traditionally been considered skin contaminants, and their recovery from cultures doesn't always indicate the presence of disease. The speciation of coagulase-negative Staphylococcus is necessary for ceain culture specimens. Coagulase-negative staphylococci can either be resistant or susceptible to novobiocin. The one most commonly isolated novobiocin resistant coagulase negative staphylococcus from urine is Staphylococcus saprophyticus. It is one of the most common causes of urinary tract infections in sexually active young women. s.epidermidis is novobiocin susceptible. MNEMONIC: on the office's STAPH retreat, there was NO StRESs. (NO= novobiocin, S=Saprophyticus, R=Resistant, E=Epidermidis, S=Sensitive) Ref: http//microbeonline.com", 'role': 'assistant'}]