One Reason Why Subjective Norms Often Sustain Unhealthy Behaviors Is

One reason why subjective norms often sustain unhealthy behaviors is that

A) people violate the subjective norms in the effort to appear independent.
B) people overestimate the rate of such behaviors among their peers.
C) individuals engaged in unhealthy behaviors lack sufficient social support.
D) subjective norms tend to exaggerate the incidence of healthy behaviors.