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: Radiology
Transrectal ultrasonography in carcinoma prostate is most useful for 
Select and explain. 
A. Guided prostatic biopsies, B. Seminal vesicle involvement, C. Measurement of prostatic volume, D. To detect hypoechoic area
A: Guided prostatic biopsies
Answer: A: Guided prostatic biopsies 
Explanation: A i.e. Guided prostatic biopsy The major role of transrectal USG is to guide prostatic biopsiesQ.