If a Horse's Tail Wrap Is to Be Left in Place

If a horse's tail wrap is to be left in place for many days, why is it important not to extend the wrap to include the coccygeal vertebrae?

A) It will prevent a clean expulsion of feces.
B) It will be impossible to keep the tail clean.
C) It will hamper free movement of the tail muscles.
D) It may create tissue slough or loss of the entire tail.