Answer the following question: Fact 1: Magnetism can cause objects to repel each other. Fact 2: Like magnet poles push away or repel each other. Given the two facts above, what can cause objects to push away each other?

Select from:
[I] work;
[II] mines;
[III] potential energy;
[IV] heat energy;
[V] magnetism;
[VI] electrically;
[VII] friction;
[VIII] gravity;
Answer:
[V]