The Main Concern the FTC Has When an Advertiser Substitutes

The main concern the FTC has when an advertiser substitutes for products during a demonstration (such as using a mixture of glue and water instead of ice cream) is ________.

A) whether the substitution is necessary
B) whether the demonstration uses puffery
C) whether the advertiser indicates that substitutes are used in the demonstration
D) whether the consumer knows substitutes are used in the demonstration
E) whether the demonstration falsely upgrades the consumers' perception of the advertised brand