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': 'Rupture of membranous urethral injury more commonly due to \nSelect and explain. \nA. Thin supported wall, B. Fixity of urethra, C. Angulation, D. Proximity to bladder', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Due to fixity of urethra to adjacent structure membrnous urethra rupture.', 'role': 'assistant'}]