Task: Question Answering
Input (English): Question: Point out the CORRECT statement about the treatment program for the challenging defiant disorder created by Barkley: 
 Options:  <1> Its main scope of application is the classroom. <2> It makes an intensive use of modeling. <3> It is a training program for parents. <4> Comorbidity with ADHD discourages the application of this program. <5> It consists of twelve steps.
Output (English): 3