Which of the Following Is NOT True of Bowel Evacuants

Which of the following is NOT true of bowel evacuants?

A) They are used for normal constipation.
B) They are similar to normal body fluids, so medication is neither absorbed nor secreted into the intestines.
C) They are safe for use by patients who are sensitive to electrolyte imbalance.
D) They require drinking large amounts of fluid.
E) They may be stopped when rectal excretions become clear.