According to Health Communication Research, Which of the Following Is

According to health communication research, which of the following is a true statement?

A) It is frequently easier to get people to start a new behavior than to stop an unhealthy behavior.
B) Campaigns designed using diffusion theory are more likely to avoid the problem of reactance
C) There is strong evidence that social norms campaigns are effective and successful
D) Campaigns that focus on raising awareness are less successful than those that focus on changing behavior.