Which of the Following Statements About the Use of Ad

Which of the following statements about the use of ad campaigns based on humorous commercials is true?

A) Humorous commercials never become boring.
B) Wearout from humorous commercials can be avoided by using multiple message executions in a campaign.
C) Research evidence proves humor does not wear out as fast as other types of advertising appeals.
D) All well-designed commercial are immune to commercial wearout.
E) All of the above statements about the use of ad campaigns based on humorous commercials are true.