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
Screening of prostate CA is best done by 
Select and explain. 
A. PET CT, B. PSA, C. DRE, D. DRE + PSA
D: DRE + PSA
Answer: D: DRE + PSA 
Explanation: DRE + PSA is the best way to screen prostate Ca.