Question

when asked how to create an electromagnet the best answer would be ,you create an electromagnet by

A( applying a direct current to a non magnetic material in order to create an electromagnetic field

B( covering a wire with insulation and applying a direct electrical current to the magnet

C( coiling a ferromagnetic material wrapping in an insulator and applying a current to the coil

D( wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current