Question: Which opera, Iphigénie en Aulide or Lulu,  is an opera in three acts by Alban Berg"?
Sentence (from "Iphigénie en Aulide"): It was premiered on 19 April 1774 by the Paris Opéra in the second Salle du Palais-Royal and revived in a slightly revised version the following year.
Relevant evidence: No