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
[{'content': 'A 4 year-old girl with a history of hydrocephalus is brought to the neurologist by her parents with a severe headache and fever. The girl underwent a surgery for a ventricular-peritoneal shunt 2 months ago, and the neurologist suspects that an infection has occurred. Organisms would most likely be isolated from the shunt tubing is: \nSelect and explain. \nA. Staph aureus, B. Streptococcus, C. Staphylococcus epidermidis, D. Meningococcus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Staphylococcus epidermidis', 'role': 'assistant'}]