Around1940, John Cage invented the prepared piano, a(n)
A. electronic keyboard capable of producingmany percussive sounds.
B. grand piano complete with flowers,candelabra, and elaborate decorations.
C. grand piano whose sound is altered byobjects such as bolts, screws, rubber bands, pieces of felt, paper, and plasticinserted between the strings of some of the keys.
D. ensemble of percussion instruments.