Jesse tests three magnets by observing how many paper clips he can attach to the north pole in a single chain. He finds that Magnet A holds six
paper clips, Magnet B holds five paper clips, and Magnet C holds two
paper clips. He warms Magnets A and C in the oven for a few minutes and
repeats his procedure. This time, Magnet A holds only four paper clips,
Magnet B still holds five paper clips, and Magnet C cannot hold any paper
clips. Which statement explains Jesse's observations?
A. Warming a magnet unaligned some of the magnetic domains.
B. The forces produced by a magnet naturally become weaker over
time.
C. Warming a magnet causes the distance of its magnetic force to
decrease.
D. poles of the magnet become reversed when warmed and
cause it to repel the paper clips.