Paper 1 May/June 2010 PHYSICS (0625/11) IGCSE

A bar magnet is held near a coil of wire. The coil is connected to a sensitive voltmeter.
The N-pole of the magnet is moved quickly towards the coil. The voltmeter shows a reading of +10 mV.
The N-pole of the magnet is then moved slowly away from the same end of the coil. The reading on the voltmeter is observed.
Which voltmeter reading is possible?