Physics · Electrostatic Potential

Which of the following fundamental characteristics is possessed by an electrostatic field due to any arbitrary charge configuration?

1. The work done in moving a charge depends on the path taken.
2. The work done in moving a charge is independent of the path and depends only on the initial and final positions.
3. Electrostatic force is a non-conservative force.
4. The work done along a closed loop is always non-zero.