A bar magnet is inserted into the coil of wire connected to a galvanometer, and is left there for 2 minutes; it is then removed from the coil. What would an observer watching the galvanometer see? [A] No change; without a battery there is no current to detect. B] A small current flows while the magnet is inside the coil of wire. [C] A current spike as the magnet enters the coil, and then a steady small current. ] A current spike as the magnet enters the coil, then nothing, and then a current spike in the opposite direction as the magnet leaves the coil.