Why Does Vesicoureteral Reflux Occur in Children

Multiple Choice

Why does vesicoureteral reflux occur in children?

A) Because they do not ask for help in urinating in a timely manner and urine is forced up into the ureters
B) Because the submucosal segment of the ureter is short,making the antireflux mechanism inefficient
C) Because the trigone lying between the opening to the ureters and the urethra is underdeveloped
D) Because as the bladder in infants and children fill,it pulls the smooth lining of the transitional epithelium away from the ureters so that the reflux valves are ineffective