<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 29-year-old woman presents to her primary care provider complaining of lower back pain. She reports a 3 day history of extreme right lower back pain. She also reports mild dysuria. Her past medical history is notable for recurrent urinary tract infections leading to 3 emergency room visits over the past year. Her family history is notable for renal cell carcinoma in her paternal grandfather and diabetes in her father. Her temperature is 99.5F 37.5C, blood pressure is 12575 mmHg, pulse is 82min, and respirations are 18min. On exam, she has mild right costovertebral angle tenderness. Radiography demonstrates a vague radiopaque structure in the right lower abdomen. Results of a urinalysis are shown below:Appearance: Hazy, yellowProtein: NegativeSpecific gravity: 1.029WBC: 2Casts: NoneBacteria: NonepH: 8.9Blood: NegativeBilirubin: NegativeUrobilinogen: 2.0A urine culture is pending. Which of the following pathogens is most likely responsible for this patients condition?? A: Escherichia coli, B: Enterococcus, C: Citrobacter freundii, D: Proteus mirabilis, E: Staphylococcus epidermidis,  <response>: This is a clinical case scenario involving a 29-year-old woman with lower back pain, dysuria, and a history of recurrent UTIs. The key findings are right costovertebral angle tenderness, hazy urine with 2 WBCs, and alkaline urine pH of 8.9. The hazy urine with WBCs indicates infection, likely a UTI given her symptoms. The alkaline urine pH narrows down the most likely organism to urease-producing bacteria like Proteus mirabilis. E. coli is the most common cause of uncomplicated UTI, but does not produce urease. Enterococcus can cause UTI but is not associated with alkaline urine. Citrobacter and Staph epidermidis are less common causes.D: Proteus mirabilis 