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
90% of bladder cancer arise from ? 
Select and explain. 
A. Squamous cells, B. Glandular cells, C. Transitional cells, D. Smooth muscle cells
C: Transitional cells
Answer: C: Transitional cells 
Explanation: Ans. is 'c' i.e., Transitional cells There are three common histological types of bladder cancer :? Transitional cell carcinama (TCC) 90% Squamous cell carcinona (SCC) - 5 -10% Adenocarcinoma -- 2%