Which of the Following Is NOT True of Osmotic Saline

Which of the following is NOT true of osmotic saline laxatives?

A) They work by increasing the amount of water in the large intestines and feces.
B) They include milk of magnesia.
C) They may be dangerous to use for persons with heart disease and hypertension because of the fluid retention.
D) Cephulac contains fructose and lactose and should be used with care for persons with diabetes.
E) They work in response to the amount of medication given, making water replacement insignificant.