This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
[{'content': 'Opening in prostatic sinus is \nSelect and explain. \nA. Seminal vesicle, B. Ejaculatory ducts, C. Prostatic utricle, D. Prostatic ductules', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Vesiculae seminales and ampulla of ductus deferens, seen from the front. Dissection of the prostate showing the prostatic urethra. The prostatic ducts are seen opening into the prostatic sinus, which lies on either side of the urethral crest and seminal colliculus. ref - BDC vol2 pg 401-404 , semantischolar.org', 'role': 'assistant'}]