While examining a newborn baby in the nursery, a physician notes that urine is draining from the umbilicus. Contrast dye is introduced into the bladder through the urethra, and it is confirmed radiologically that dye is passing to the umbilicus. Which of the following embryonic structures has abnormally persisted in this patient?

1. A)Mesonephric duct
2. B)Mesonephric tubules
3. C)Urorectal septum
4. D)Allantoic ductGABARITO
5. E)Ureteric bud