In Chapter 11 We Discussed a Study Known as the Stroop

In Chapter 11 we discussed a study known as the Stroop effect.Stroop developed 3 types of stimuli for his study.Each type of stimuli presented a different task that participants had to complete.Stroop then measured the amount of time it took the participants to complete each task.This is an example of what type of design?

A) between subjects design
B) within subjects design
C) between participants design
D) mixed subjects design