30. What does the author try to suggest in the conclusion?
(A) To acquire a stable identity, Cosplayers are generally not interested in experimentation.
(B) Cosplayers have the privilege to wear a costume inspired from multiple sources.
(C) To form their identity type, Cosplayers have to wear a costume designed by themselves.
(D) Cosplayers think the same way as their identity group does to decide their character andconduct.