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: Anatomy
[{'content': 'Collecting tubules of kidney develop from- \nSelect and explain. \nA. Ureteric bud, B. Mesonephric duct, C. Paramesonephric duct, D. Wolffian duct', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]