One Main Difference Between Clinical Behavior Therapy and Direct Contingency

One main difference between clinical behavior therapy and direct contingency management is...

A) clinical behavior therapy is a behavioral treatment whereas direct contingency management is a cognitive treatment.
B) clinical behavior therapy is administered primarily to parents whereas direct contingency management is administered primarily to children.
C) clinical behavior therapy has demonstrated its efficacy in treating ADHD whereas direct contingency management has not.
D) clinical behavior therapy includes the use of positive reinforcement whereas direct contingency management relies chiefly on token economies and point systems.