For $18$ months, Warner$-$Lambert Co$.,$ an American pharmaceutical company, was required to include the following statement in all television advertisements for Listerine: "Listerine will not help prevent colds or sore throats or lessen their severity." The Federal Trade Commission $($FTC$)$ imposed this requirement because previous advertising had caused consumers to believe Listerine was effective against colds. This is an example of the FTC action known as

Multiple Choice

unethical advertising.

corrective advertising.

deceptive advertising.

cease and desist advertising.