Select the correct statement about the ureters.

• A. The ureter is innervated by parasympathetic nerve endings only.
• B. Ureters contain sphincters at the entrance to the bladder to prevent the backflow of urine.
• C. The epithelium is stratified squamous like the skin, which allows a great deal of stretch.
• D. The ureters are capable of peristalsis like that of the gastrointestinal tract.