A bungee jumper is attached to a bungee cord, which acts like a spring. When the bungee jumper jumps, he oscillates in periodic motion. If losses due to friction and air resistance can be ignored, what types of energy conversions are involved in this system? A. Energy is converted between gravitational potential and elastic potential energy B. Energy is converted between kinetic and gravitational potential energy C. Energy is converted between gravitational potential, elastic potential, and kinetic energy, D. Energy is converted between kinetic and elastic potential energy. help please!!!​