This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Development of GU system and Neuro-vascular supply of pelvis & perineum, Subject name: Anatomy
[{'content': 'Which of the following combination is WRONG regarding developmental origin of urogenital system \nSelect and explain. \nA. 2 - Para mesonephric duct, B. 3- Mesonephric duct, C. 1 - Mullerian duct, D. 4- Urogenital sinus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Marker 3 is Urethra, which develops from Urogenital sinus (not Mesonephric duct). Key:Marker 1- Uterine tube: Develops from Paramesonephric (Mullerian) duct Marker 2 - Uterus: Develops from Paramesonephric (Mullerian) duct Marker 3 - Urethra: Develops from Urogenital sinus Marker 4 -Urinary bladder: Develops from Urogenital sinus', 'role': 'assistant'}]