A 24-year-old woman comes to the physician for a 1-year history of inability to conceive. The uterus demonstrates external fundal indentation. A hysterosalpingogram is shown.

Which of the following is most likely to be seen in this patient?
A) Failure of canalization of the vaginal plate
B) Failure of degeneration of the paramesonephric septum
C) Failure of development of the urogenital sinus
D) Failure of fusion of the mesonephric ducts
E) Failure of fusion of the paramesonephric ducts

