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': 'The appendix of the testis develops from \nSelect and explain. \nA. Mesonephric duct, B. Paramesonephric duct, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Inderbir Singh&;s; Human embryology; Tenth edition; Pg 300The paramesonephric ducts remain rudimentary in a male.The greater pa of each duct eventually disappears.The cranial end of each duct persists as a small rounded body attached to the testis (appendix of testis) that may occasionally give rise to cysts.', 'role': 'assistant'}]