This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urethra and penis, Subject name: Surgery
[{'content': 'A 25 years of male presents to emergency depament following a road traffic accident. On examination there is pelvic fracture and blood at urethral meatus. All of the following are true about patient except: \nSelect and explain. \nA. Anterior urethra is the most likely site of injury, B. Retrograde urethrography should be done after the patient is stabilized, C. Foley catheter may be carefully passed if the RGU is normal, D. Rectal examination may reveal a large pelvic hematoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: INJURIES TO POSTERIOR URETHRA ETIOLOGY MC site injured in pelvic fracture is membranous urethra. CLINICAL FEATURES Retention of urine + Blood at urethral meatus + Pelvic hematoma and high lying prostate Presence of blood at external urethral meatus indicates thatImmediate urethrography Pie in sky appearance on IVP in membranous urethral injury. INSTRUMENTAL EXAMINATION In suspected paial injury, gentle single attempt to catheterize the patient acts as a stent over which urethra heals. Retrograde urethrography should be done after the patient is stabilized', 'role': 'assistant'}]