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': 'The embryonic development of the vestibule of the vagina is from which of the following developmental structures? \nSelect and explain. \nA. Genital ridge, B. Wolffian duct, C. Urogenital sinus, D. Mullerian duct', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Clitoris develops from three swellings of the somato-pleurae known as genital tubercle, urogenital folds and labioscrotal folds, while urethra, vestibule and lower vagina are derived from the urogenital sinus.', 'role': 'assistant'}]