What happens to current sent through a superconducting wire?

• It gains a slight voltage boost.
  Superconductors have zero resistance, so current sent through such a wire loses no energy.
• It's transmitted without loss of energy.
  Superconductors have zero resistance, so current sent through such a wire loses no energy.
• It experiences a sharp voltage drop.
  Superconductors have zero resistance, so current sent through such a wire loses no energy.