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
All are true about gleason’s score except 
Select and explain. 
A. Used for grading prostatic ca, B. Maximum score is 10, C. Minimum score is 2, D. It is the most important prognostic factor
D: It is the most important prognostic factor
Answer: D: It is the most important prognostic factor 
Explanation: Stage of Ca is the most important prognostic factor.