How Does the Alternating Treatments Design Differ from the Changing

Multiple Choice

How does the alternating treatments design differ from the changing conditions design?

A) The alternating treatments design is used to determine the effectiveness of more than   one intervention, while the changing conditions design is used to increase the standard   for acceptable performance.
B) Unlike the changing conditions design where interventions are introduced  consecutively, in the alternating  treatments design one intervention is rapidly substituted for another.
C) The alternating treatments design is a variation of the multiple baseline design, whereas t he changing conditions design is a variation of the reversal design.
D) Unlike the changing conditions design which is used to assess the effect of behaviors   over several settings, the alternating treatments design is used to assess the effect  several observers.