A rock is pushed out of a six-story window that is 60 feet above the ground. What energy changes occur as the rock falls to the ground? A) The potential energy of the rock is destroyed as it falls. B) The potential energy of the rock is transformed into kinetic energy. C) The kinetic energy of the rock is transformed into potential energy. D) The rock on the ground possesses more potential energy than it did when it was 60 feet higher.