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
Most consistent and persistent feature of Ca Bladder 
Select and explain. 
A. Frequency, B. Dysuria, C. Lump, D. Hematuria
D: Hematuria
Answer: D: Hematuria 
Explanation: Hematuria is the most consistent and Persistent feature of Ca Bladder.