The Use of Amphetamine Compounds in Weight Loss Programs Was

The use of amphetamine compounds in weight loss programs was found to

A) be about as effective as simple diet and exercise over time.
B) be more effective than diet and exercise in 90 percent of the research studies cited by your text.
C) result in permanent loss of weight by the patient, even after s/he stopped taking the medication.
D) require that the patients continue to take the medication for the rest of their lives to prevent dietary "rebound" weight gain.