This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'All of the following are derivatives of Urogenital Sinus except \nSelect and explain. \nA. Bladder, B. Ejaculatory duct, C. Prostatic uretha, D. Membranous uretha', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]