An index vector points unquestionably in one direction, while a graphic vector is more subtle

Beijing opera is a spectacular form that puts a high premium on acting techniques

Indicate whether the statement is true or false

How can viewers interact with Méta-Harmonie II?

a)  Viewers activate a foot pedal to start the rotors. b)  Viewers can move parts of the sculpture around. c)  Viewers can climb on the sculpture. d)  Viewers can press a button to hear sounds.