The correct option is A Magnetic Field
Whenever there is force on magnetic pole, there exists Magnetic Field. The north-seeking pole of such a magnet, or any similar pole, is called a north magnetic pole. The south-seeking pole, or any pole similar to it, is called a south magnetic pole. Unlike poles of different magnets attract each other; like poles repel each other.Magnetic force. Magnetic force, attraction or repulsion that arises between electrically charged particles because of their motion. ... Electric forces exist among stationary electric charges; both electric and magnetic forces exist among moving electric charges.