When Philippe Petit was in the middle of the wire between the World Trade Center Towers the wire depressed 1 ft. If during his 40 minutes of tricks the wire began to oscillate up and down from this equilibrium position by 6 inches, where is his kinetic energy the greatest?

6 inches above his equilibrium position.

at the equilibrium position.

6 inches below the equilibrium position.

His kinetic energy is a constant at every position.