The drawing shown above is a micrograph of a cross section of a ureter. A patient becomes ill with a condition that prevents the tissue labeled B from functioning properly. What is the result of this condition?

A) If the smooth muscle does not function properly, the ureter cannot contract to drain urine from the kidneys.

B) If the smooth muscle does not function properly, the ureter cannot expand to accommodate the flow of urine.

C) If the epithelium does not function properly, the ureter cannot expand to accommodate the flow of urine.

D) If the epithelium does not function properly, the ureter cannot contract to drain urine from the kidneys.