<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 because of trauma from a motor vehicle accident. His pulse is 122min and rapid and thready, the blood pressure is 7837 mm Hg, the respirations are 26min, and the oxygen saturation is 90 on room air. On physical examination, the patient is drowsy, with cold and clammy skin. Abdominal examination shows ecchymoses in the right flank. The external genitalia are normal. No obvious external wounds are noted, and the rest of the systemic examination values are within normal limits. Blood is sent for laboratory testing and urinalysis shows 6 RBCHPF. Hematocrit is 22 and serum creatinine is 1.1 mgdL. Oxygen supplementation and IV fluid resuscitation are started immediately, but the hypotension persists. The focused assessment with sonography in trauma FAST examination shows a retroperitoneal fluid collection. What is the most appropriate next step in management?? A: CT of the abdomen and pelvis with contrast, B: Take the patient to the OR for an exploratory laparotomy, C: Perform an MRI scan of the abdomen and pelvis, D: Obtain a retrograde urethrogram, E: Perform a diagnostic peritoneal lavage,  <response>: This is a question about the management of a patient with suspected abdominal trauma after a motor vehicle accident. The key findings are hypotension not responding to fluid resuscitation, hematuria, low hematocrit, and a positive FAST exam showing retroperitoneal fluid. This indicates likely active internal bleeding requiring urgent surgical control. MRI and CT scan would delay definitive treatment. Retrograde urethrogram is not indicated given normal external genitalia exam and minimal hematuria. Diagnostic peritoneal lavage has fallen out of favor compared to FAST exam. B: Take the patient to the OR for an exploratory laparotomy 