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: Surgery
Renal Calculi associated with proteus infection is? 
Select and explain. 
A. Uric Acid, B. Triple Phosphate, C. Calcium oxalate, D. Xanthine
B: Triple Phosphate
Answer: B: Triple Phosphate 
Explanation: Triple phosphate stones are produced secondary to infection by Proteus mirabilis which is a urease producing bacteria. Ref: Radiological Imaging of the Kidney By Emilio Quaia, Page 403; Bailey 24th Edition, Page 1319; Schwaz 8th Edition, Page 1547; Clinical Pediatric Urology 4th Edition, Page 1238