This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Anatomy
[{'content': 'Features of membarous urethral injury \nSelect and explain. \nA. Blood at meatus, B. Extravasation of urine, C. Retention of urine, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Injury of membranous urethra is usually associated with pelvic fractures d/t A. Its clinical features include blood in external meatus, failure or difficulty in passing urine, extravasation of urine to scrotum, perineum, abdominal wall.', 'role': 'assistant'}]