James Hampton's the Throne of the Third Heaven of the Nations

James Hampton's The Throne of the Third Heaven of the Nations' Millennium General Assembly was made using ________.

A) discarded chewing gum that the artist collected from movie theater seats
B) artworks created by other people, on top of which the artist painted his own work
C) fine gold and silver jewelry that the artist melted down
D) found objects that the artist transformed
E) none of the other answers