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: Pediatrics
[{'content': 'A 3-year-old male child diagnosed to have acute UTI developed left flank pain on ultrasonogram, the left ureter was found to be duplicated the most probable site of the opening of ectopic ureter will be – \nSelect and explain. \nA. Prostatic urethra, B. Vas deferens, C. Seminal vesicle, D. Trigone of bladder', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ectopic ureter\n\nA ureter that drains outside the bladder is referred to as an ectopic ureter.\nEctopic ureter usually drains the upper pole of a duplex collecting system (two ureter → duplication of ureter).\nIt is more common in girls.\nThe opening of ectopic ureter differs in female and males -\n\nI) Female\n\nUrethra at bladder neck → 35%\nUrethrovaginal septum → 35%\nVagina → 25%\nCervix, uterus, Gartner duct, or a urethral diverticulum → few\n\n2) Male\n\nPosterior (prostatic) urethra above external sphincter\xa0→\xa047%\nSeminal vesicle\xa0→\xa033%\nProstatic utricle\xa0→\xa010%\nEjaculatory 'duct\xa0→\xa05%\nVas deferens\xa0→\xa03 5%", 'role': 'assistant'}]