Multi-select problem: How does the next paragraph end?

After he signals the body builders to start, they begin arm wrestling. Both the body builders use all their force and concentration while they try to take the opponent down. they

Select from: 1. continue using force as they pivot their elbows to push their opponent's arm in the opposite direction. 2. continue to fight one another and lead into them throwing punches. 3. take turns going up and down the arm builders trying to take small chunks out of him. 4. smash parts of the opponent, nailing him on the floor with blows.
1.