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
Which one of the following is not an intravesical chemotherapeutic agent- 
Select and explain. 
A. Mitomycin C, B. BCG, C. Epirubicin, D. Thiotepa
B: BCG
Answer: B: BCG 
Explanation: BCG is an immunotherapeutic agent, not a chemotherapeutic one.