The embryonic development of the vestibule of the vagina is from which of the following developmental structures?
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.
Genital ridge
Wolffian duct
Urogenital sinus
Mullerian duct