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': 'Ascending UTI caused by - \nSelect and explain. \nA. Salmonella, B. T.B., C. E.coli, D. All', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., E.coli Urinary tract infection . In the vast majority of UTIs, bacteria gain access to the bladder urethra. Ascent of bacteria from bladder may follow and is the pathway for most renal parenchymal infections. . Organisms are ? - E.coli (most common) - Serratia - N. gonorrhoea - Proteus - Pseudomonas - Herpes simplex virus - Klebsiella - Chlamydia trachomatis - S. saprophyticus . Hematogenous spread causing UTI by - Staph aureus - Candiada", 'role': 'assistant'}]