Which of the Following Is Not an Effective Campaign Technique

Which of the following is not an effective campaign technique?

A) Using a slogan that is easily remembered, such as "Smoke-Free Forever" or "No More Dieting to Lose Weight"
B) Test marketing the slogan on a sample population of the targeted group (e.g., the elderly, young adults, women of menopause age)
C) Beginning the headline of the advertisement with an insult "You're so obese you couldn't fit through the door of our new weight loss program, but come anyway"
D) All of these are correct.