This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Screening of prostate CA is commonly done by \nSelect and explain. \nA. DRE (digital rectal exam) & PSA, B. MRI pelvis, C. TURP, D. TRUS', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Screening of prostate cancerPSAIn general, one would advise men aged50-69 years to undergo prostate biopsy if the PSA was more than ~3 ng/mL. The threshold would be lower in younger men with a strong family history.DREIrregular induration, characteristically stony hard in pa or in the whole of the gland (with obliteration of the median sulcus), suggests carcinomaBailey and love 27 e pg: 1458', 'role': 'assistant'}]