This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glomerulonephritis, Subject name: Pathology
All of the following about xanthogranulomatous pyelonephritis are true except: 
Select and explain. 
A. On cut section yellowish nodules are seen, B. Associated with tuberculosis., C. Foam cells are seen, D. Giant cells are seen
B: Associated with tuberculosis.
Answer: B: Associated with tuberculosis. 
Explanation: Xanthogranulomatous pyelonephritis Chronic destructive granulomatous process of renal parenchyma Associated with Long-term urinary tract obstruction Infection E. coli Proteus mirabilis Pseudomonas Streptococcus faecalis Klebsiella Not associated with Tuberculosis