This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'A patient was brought to the hospital with a history of A eight hours back. A few drops of blood is noted at the external urethral meatus. He has not passed urine and his bladder is palpable per abdomen. The probable diagnosis is : \nSelect and explain. \nA. Urethral injury, B. Rupture bladder, C. Urethral injury with extravasation of urine in the retroperitoneum, D. Anuria due to hypovolemia', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. Urethral injury Blood at urethral meatus and urine retention are suggestive of urethral injury.", 'role': 'assistant'}]