A girl is trying to make a simple electromagnet to help her pick up a piece of metal she dropped under a car. Which list of materials would she need to make an electromagnet? (1 point)
A. metal rod for a core, copper wire, 12-volt battery
B. wooden rod for a core, copper wire, 12-volt battery
C. plastic rod for a core, copper wire, 12-volt battery
D. glass rod for a core, copper wire, 12-volt battery