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: Anatomy
[{'content': 'Epithelium of vagina arises from? \nSelect and explain. \nA. Ectoderm, B. Wolffian duct, C. Mesoderm, D. Mesonephric duct', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Vagina is derived from two sources :- Upper 2/3rd : It is derived from Utero-Vaginal Canal, i.e. the fused pa of paramesonephric duct. Therefore, this pa is mesodermal in origin. Lower 1/3rd : It is derived from sinovaginal bulb which inturn is derived from urogenital sinus. Thus, this pa is endodermal in origin.', 'role': 'assistant'}]