Which Is True with Respect to the Transtheoretical Model

Which is true with respect to the transtheoretical model?

A) It is also known as the steps-in-health-attainment model.
B) Maintenance refers to the period immediately after the individual first shows the desired behavior change.
C) Heath interventions usually are most effective when directed toward people in the preparation stage.
D) Relapse always occurs in the first stage of the model.