<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 25-year-old woman presents to the clinic with complaints of dysuria and increased urinary frequency. Her urinalysis results are negative for nitrites. Urine microscopy shows the findings in figure A.What is the most likely cause underlying her symptoms?? A: E. coli infection, B: S. saprophyticus infection, C: Acute tubular necrosis, D: Renal calculi, E: Enterococci infection,  <response>: This is a clinical vignette describing a 25-year-old woman with symptoms of a urinary tract infection dysuria and increased urinary frequency. The additional information provided is that her urinalysis was negative for nitrites but urine microscopy showed the findings seen in Figure A. Based on the symptoms, a urinary tract infection is the most likely diagnosis. The negative nitrites make E. coli infection less likely as this is typically associated with positive nitrites on urinalysis. The urine microscopy findings shown in Figure A reveal gram positive cocci in clusters, morphologically consistent with Staphylococcus saprophyticus. S. saprophyticus is a common cause of UTIs in young women.The other options provided can be ruled out:- Acute tubular necrosis would not present with these UTI symptoms - Renal calculi could cause dysuria but not the urinary frequency- Enterococci, while a cause of UTIs, do not have the morphological appearance seen in Figure AB: S. saprophyticus infection 