Andreas has to make an electromagnet in his science class. He was only given a nail, copper wire, and a 9-volt battery. The assignment was to make a magnet strong enough to pick up paper clips. His teacher decided to make the assignment into a competition to see whose magnet could pick up the most clips.

What can Andreas do to his magnet to make sure he wins by picking up the most paper clips?
A
Andreas can wrap few coils of the wire, far apart, around the nail.

B
Andreas can wrap many coils of the wire, far apart, around the nail.

C
Andreas can wrap many coils of the wire, close together, around the nail.

D
Andreas can wrap few coils of the wire, close together, around the nail.