There Are Many Diet Aids on the Market

There are many diet aids on the market.They promise immediate weight loss without exercise or a change in diet.Each is accompanied by a testimonial from a satisfied user.If you pay close attention,you will notice that each ad also contains the statement,"Results may vary." Most likely,this statement is included to prevent the FTC from requiring the dietary aid distributor from having to

A) engage in self-regulation.
B) engage in comparative advertising.
C) issue an advertising injunction.
D) guarantee truth-in-advertising.
E) run corrective advertising.