A bar magnet is positioned close to a coil of wire, and the coil is attached to a sensitive voltmeter. The N-pole of the magnet is pushed rapidly towards the coil. The voltmeter gives a reading of $+10\,\text{mV}$. The N-pole of the magnet is then pulled slowly away from the same end of the coil. The voltmeter reading is noted. Which voltmeter reading is possible?
- A$-15\,\text{mV}$
- B$-5\,\text{mV}$
- C$0\,\text{mV}$
- D$+5\,\text{mV}$