Which of the Following Is NOT True of Anorexiants

Which of the following is NOT true of anorexiants?

A) They can stand on their own to produce long-term weight loss.
B) They work on the brain to decrease stimulation of the appetite center and produce tolerance in only a short period of time.
C) Short-acting anorexiants usually work for 3 to 4 hours and must be taken before each meal, while long-acting anorexiants last for 12 hours.
D) They may cause insomnia.
E) Their side effects include stimulation of the nervous system, dizziness, euphoria, fatigue, dry mouth, abdominal discomfort, and constipation.