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': 'Most common cause of UTI in a neonate is \nSelect and explain. \nA. E.coli, B. S. aureus, C. Enterococcus, D. Anerobes', 'role': 'user'}, {'content': "Answer: A \nExplanation: Causative agents of UTI:Uncomplicated UTIComplicated UTI*E.coli *Klebsiella*Proteus species*Enterobacter*Staphylococcus saprophyticus*Enterococci *Chlamydia , Neisseria *Ureaplasma, Mycoplasma . Adenovirus *E.coli *Klebsiella*Proteus species*Serratia marcescens*Pseudomonas *Enterococci Staphylococci Ref:Harrison's infectious disease 2nd edition, p296", 'role': 'assistant'}]