Drama in Classical Athens Was Transformed When

Drama in classical Athens was transformed when:

A) Aeschylus introduced additional characters and a chorus to stage presentations in order to present human conflict and conversation.
B) Aristotle encouraged playwrights to set aside traditional epics and tragic works for political satire.
C) Aristophanes introduced Greek tragedy, designed to inspire the emotions of pity and fear.
D) Herodotus constructed the first amphitheater with seating benches and a stage for performers.
E) all of these