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: Medicine
[{'content': 'Chromosomes involved in adult polycystic kidney disease (APKD) - \nSelect and explain. \nA. 6&11, B. 4 & 16, C. 4 & 12, D. 4 & 17', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]