A Dismantling Study of DBT by Linehan and Colleagues (2006)provided

A dismantling study of DBT by Linehan and colleagues (2006) provided evidence that DBT was associated with better outcomes than community experts' treatments.The text authors conclude that this study provides evidence that:

A) common factors are the likely source of influence on DBT outcomes.
B) factors specific to DBT are effective in reducing suicidal behavior.
C) expert therapy is expert therapy,and most established treatments produce equivalent outcomes.
D) DBT's complex mix of common and specific factors make their effects highly difficult to separate.