Drug Rehabilitation Programmes Often Require That Their Patients Discontinue Contact

Drug rehabilitation programmes often require that their patients discontinue contact with old 'using' friends, and maintain friendships with new 'clean' friends only.One reason that this makes sense from a social psychological standpoint is that by changing their social networks in this way, ____.

A) patients will have a better shot at creating new, more positive self-concepts
B) patients will be forced to engage in more introspection
C) patients will engage in more self-awareness
D) patients will be less likely to experience the overjustification effect