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: Pathology
[{'content': 'Which of the following statements about Xanthogranulomatous pyelonephritis is not true - \nSelect and explain. \nA. Foam cells are seen, B. Associated with tuberculosis, C. Yellow nodules are seen, D. Giant cells may be seen', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]