If these two ice skaters were the same size and move toward each other at the same speed what would happen after they ran into each other?

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1 point
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they would both immediately fall
the boy would make the girl move away with more force before falling down
the girl would make the boy move away with more force before falling down
they would both go backwards away from each other with the same fore before falling down

Assuming no external forces are acting on them and neglecting any friction, the correct answer would be: they would both go backwards away from each other with the same force before falling down.