Which of these Broadway musicals preceded the others?

This work essentially asks the question?

a) what happens when modernism confronts popular music b) what happens when the composer invites total aleatory c) what happens when the composer does not provide a score d) what happens when the composer relies on musique concrète

In the context of filmmaking in Germany, identify a true statement about Slatan Dudow's Kuhle Wampe (1932).

A. It provoked the spectators to remain emotionally involved with its story. B. It was produced by a German nonprofit firm, Frontier Films. C. It was the most prominent German Communist film of the era. D. It explored the forbidden subject of adultery.