You Are Meeting Some Friends at a Pub

You are meeting some friends at a pub. You haven't been to this particular pub before but know they are sitting near a stage where some musicians will be playing. When you arrive, you hear a band playing a cover of a song you recognize and walk towards the music, finding your friends almost immediately. How did your sense of hearing accomplish the task of locating where the sound was coming from?

A) comparing both the timing and intensity of auditory signals reaching each ear
B) stroboscopic movement
C) comparing the timing of auditory signals reaching each ear
D) dark adaptation
E) comparing the intensity of auditory signals reaching each ear