Sherif's summer camp experiment was conducted in 4 phases. Arrange in correct sequence the phases given below :

(A) Intergroup competition
(B) Friendship formation
(C) Intergroup cooperation
(D) Ingroup formation

Choose the correct answer from the options given below :

(B), (D), (A), (C)

Sherif conducted a series of experiments on 11–12 year old boys who did not know each other. The boys were attending a summer camp. Unknown to the boys, there were researchers in the camp who examined their (the boys) behaviour. The experiment consisted of four phases, viz. friendship formation, ingroup formation, intergroup competition, and intergroup cooperation.