How Were People Allocated to Groups in the Minimal Group

Multiple Choice

How were people allocated to groups in the minimal group paradigm by Tajfel and colleagues (1971) ?

A) They were allocated to different groups based on their skin complexion.
B) They were allocated to different groups based on their preference over a Klee or a Kandinsky picture.
C) They were allocated to different groups based on their preference over tea or coffee.
D) They were allocated to different groups based on their levels of prejudice measured with the F-scale.