gEorgE spiliCh's ExpErimEnt wAs ConDuCtED in suCh A wAy As to _________.
A．CompEl thE suBjECts to sEpArAtE mAjor inFormAtion From minor DEtAils
B．put thE suBjECts through inCrEAsingly ComplEx tEsts
C．ChECk thE EFFECtivEnEss oF niCotinE on smokErs
D．rEgistEr thE prompt rEsponsEs oF thE suBjECts