<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 33-year-old man is brought to the emergency department 20 minutes after losing control over his bicycle and colliding with a parked car. The handlebar of the bicycle hit his lower abdomen. On arrival, he is alert and oriented. His pulse is 90min, respirations are 17min and blood pressure is 11070 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 97. The pupils are equal and reactive to light. There are multiple bruises over his chest and lower extremities. The lungs are clear to auscultation. Cardiac examination shows no abnormalities. The abdomen is soft and nontender. There is no pelvic instability. Rectal examination is unremarkable. A complete blood count, prothrombin time, and serum concentrations of glucose, creatinine, and electrolytes are within the reference range. Urine dipstick is mildly positive for blood. Microscopic examination of the urine shows 20 RBCshpf. Which of the following is the most appropriate next step in management?? A: Suprapubic catheterization, B: Intravenous pyelography, C: Laparotomy, D: Observation and follow-up, E: CT scan of the abdomen and pelvis,  <response>: This is a case of a 33-year-old man who was in a bicycle accident and sustained trauma to his lower abdomen. The key findings are that he is hemodynamically stable, alert and oriented, with no signs of intra-abdominal injury on initial examination. The urine dipstick showing trace blood and microscopy showing 20 RBCshpf indicates possible minor renal trauma. The options include invasive procedures like suprapubic catheterization, IV pyelography and laparotomy, which are not indicated given the stable initial presentation. CT scan of the abdomen and pelvis could be considered to evaluate for solid organ injury, but observation and follow-up is likely the most appropriate initial approach in this stable patient with minor laboratory findings concerning for renal trauma. Serial exams and monitoring for any change is prudent. More invasive testing can be considered if the patient develops concerning signs or symptoms.D: Observation and follow-up 