An EMF is produced in a coil, which is not connected to an external voltage source. This is NOT due to which of these?

The coil being in a time varying magnetic field. The coil moving in a time varying magnetic field. The coil moving in a constant magnetic field. The coil is stationary in external spatially varying time-independent magnetic field

The coil is stationary in external spatially varying time-independent magnetic field

The magnetic flux linked with then coil does not change at all.