A Recent Study of the Effectiveness of Contingency Management Treatment

A recent study of the effectiveness of contingency management treatment interventions (i.e.,positive reinforcement for abstinence such as earning prizes) for people with substance abuse problems documented:

A) that antecedent and stimulus control procedures were generally more effective.
B) that contingency management was superior to counterconditioning.
C) considerable success.
D) the benefits of a punishment over positive reinforcement.