question: Q:A 35-year-old female presents to her gynecologist complaining of vaginal discomfort. She reports that over the past two weeks, she has developed dyspareunia and feels as if there is a mass on the external aspect of her vagina. She is sexually active in a monogamous relationship. On physical examination, there is a 2 cm unilateral erythematous swelling on the right side of the posterolateral labia minora. Which of the following embryologic precursors gives rise to the affected tissue in this patient?? 
  {'A': 'Paramesonephric duct', 'B': 'Genital tubercle', 'C': 'Urogenital sinus', 'D': 'Urogenital fold', 'E': 'Labioscrotal swelling'},