$2.$ In a computer simulation, Jeffrey moves a magnet $($Magnet $2)$ toward another magnet $($Magnet $1)$ that cannot move. What happens to the potential energy in the system of magnets?

The potential energy does not change because the magnets in the system do not change.

b

The potential energy increases because Magnet $2$ moves against the magnetic force.

The potential energy decreases because Magnet $2$ moves against the magnetic force.

The potential energy decreases because Magnet $2$ moves in the same direction as the magnetic force