This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bladder Cancer, Subject name: Surgery
Which of the following is used in urinary bladder carcinoma? 
Select and explain. 
A. 5FU, B. BCG, C. Cyclophosphamide, D. 6 Mercapto Purine
B: BCG
Answer: B: BCG 
Explanation: Amns. (b) BCGRef: Sabiston Textbook of surgery 18th ed Table 77-6