A student wraps 10 coils of copper wire around an iron bolt, and then she connects the ends of the wire to a battery. Next, the student uses the nail to lift paper clips. She then conducts a second trial using the same wire, battery, and nail, but with 30 coils of copper wire wrapped around the bolt. What will happen in the second trial?
A The bolt will lift the same number of paper clips, because both trials used the same type of battery.
B The bolt will lift less paper clips, because more conductive material in the system will balance more paper clips.
C The bolt will lift the same number of paper clips, because both trials used the same type of paper clips.
D The bolt will lift more paper clips, because more coils of wire produces a stronger magnetic field.