All of the Following Were Outcomes of the MTA Study

All of the following were outcomes of the MTA study of ADHD, except

A) Initially, it was thought that medication alone and medication plus behavioral treatment were superior to all other treatment conditions.
B) follow?up after 24 months revealed no adverse effect for those children who had been on medication for the two?year period.
C) although initial results looked promising, after 14 months, advantages for the medication group dissipated by 50%.
D) researchers are suggesting that different comorbid clusters may respond differently to different treatment alternatives.